What to Do When a Baby Is Choking: A Step-by-Step Guide for Parents
Learn the back blows and chest thrusts technique that could save your baby’s life — plus the choking hazards every parent needs to know.
Few things are more terrifying than watching your baby gag, turn red, and go silent. As babies begin exploring solid foods — usually around six months — choking becomes one of the most common fears for new parents. And that fear is well-founded: choking is a leading cause of injury and death in children under one year old in Canada.
The good news is that infant choking first aid is straightforward, effective, and something every parent can learn. The technique — a combination of 5 back blows and 5 chest thrusts — has been saving babies’ lives for decades. This guide walks you through exactly how to recognize choking, what to do step by step, and which everyday foods and objects pose the biggest risks.
Signs Your Baby Is Choking
The first step in helping a choking baby is recognizing what choking actually looks like. Many parents confuse normal gagging with true choking — and the distinction matters, because the response is very different.
Coughing and gagging: a good sign
If your baby is coughing forcefully, sputtering, or making retching sounds, their airway is not fully blocked. Gagging is a protective reflex — the body’s built-in mechanism for pushing objects away from the airway. Babies have a very sensitive gag reflex, especially when they are learning to eat solid foods. A gagging baby may turn red in the face, make loud sounds, and look distressed, but as long as they can cough and breathe, the reflex is doing its job.
What to do: Stay close and let the baby cough. Do not slap them on the back or stick your fingers in their mouth. Keep them upright or slightly forward-leaning and monitor them closely. In most cases, the gag reflex will resolve the situation on its own within a few seconds.
Silent distress: the real emergency
True choking is often silent. When the airway is fully or significantly blocked, air cannot pass over the vocal cords, so the baby cannot cry, cough effectively, or make much sound at all. This is the situation that requires immediate action.
Watch for these signs of a blocked airway:
- No sound or only very weak, quiet coughing — the baby is trying to cough but cannot generate force
- Inability to cry or make vocal sounds — silence where you would expect screaming
- Skin colour changes — the face, lips, or fingertips may turn blue, grey, or very pale
- High-pitched wheezing or squeaking sounds — air squeezing past a partial blockage
- Wide, panicked eyes — the baby looks frightened and is struggling
- Difficulty breathing — the chest may pull inward with each attempted breath
Step-by-Step: How to Help a Choking Baby (Under 1 Year)
If your baby is showing signs of a blocked airway — silent distress, inability to cry or cough effectively, colour changes — follow these steps immediately. This technique applies to infants from birth to 12 months old.
1Assess the situation quickly
Before you intervene, take two seconds to determine whether the baby is coughing effectively or in silent distress. If the baby is coughing hard and making noise, do not intervene — let the cough do its work and stay close. If the baby is silent, cannot breathe, or is changing colour, move immediately to Step 2.
If someone else is nearby, point directly at them and say clearly: “Call 911 right now.” Being specific cuts through panic and ensures help is on the way while you perform first aid.
2Position the baby face-down on your forearm
Sit down or kneel for stability. Lay the baby face-down along your forearm, with their head lower than their chest. Use your hand to support the baby’s jaw and head — place your thumb on one side of the jaw and your fingers on the other side, keeping the mouth open and pointing downward. Rest your forearm on your thigh for support.
This head-down position uses gravity to help the object move toward the mouth rather than deeper into the airway.
3Give 5 firm back blows
Using the heel of your free hand, deliver 5 firm back blows between the baby’s shoulder blades. Each blow should be a distinct, sharp strike — not a gentle pat. The force creates vibration and pressure in the airway that can dislodge the object.
After each blow, check whether the object has been expelled. If the baby starts coughing forcefully or the object comes out, stop and monitor them. If the airway is still blocked after 5 back blows, move to Step 4.
4Turn the baby face-up and give 5 chest thrusts
Supporting the back of the baby’s head with your hand, turn them over so they are face-up on your forearm, head still lower than chest. Place two fingers (index and middle finger) on the centre of the baby’s chest, just below the nipple line — the same position used for infant CPR compressions.
Give 5 firm chest thrusts, pushing down about 1.5 inches (4 cm) with each thrust. Each thrust should be a sharp, deliberate push — not a rapid pumping motion. Allow the chest to fully recoil between each thrust. The goal is to create enough pressure to force air up through the airway and push the object out.
5Check the mouth — but never do a blind finger sweep
After each set of back blows and chest thrusts, look inside the baby’s mouth. If you can clearly see an object, carefully remove it with your fingertip using a hooking motion.
Never stick your finger into the baby’s mouth to sweep blindly. A blind finger sweep can push the object deeper into the airway, making the blockage worse. Only remove objects you can clearly see.
6Repeat the cycle until the object is cleared
If the airway is still blocked, return to Step 2 and repeat the sequence: 5 back blows, then 5 chest thrusts, checking the mouth between each set. Continue this cycle until the object is dislodged, the baby starts breathing and crying normally, or emergency services arrive.
Stay calm and count each blow and thrust deliberately. Rushing leads to sloppy technique. Firm, purposeful strikes are far more effective than fast, panicked ones.
7If the baby becomes unresponsive — begin infant CPR
If at any point during the choking response the baby goes limp, loses consciousness, or stops breathing, immediately begin infant CPR. Place the baby on a firm, flat surface and start with 30 chest compressions, then check the mouth for any visible object before giving 2 rescue breaths.
For the complete CPR technique, read our Baby CPR: The Complete Guide for New Parents.
If you are alone and have not yet called 911, do so after 2 minutes of CPR. Put the phone on speaker and continue CPR while speaking to the dispatcher.
Common Choking Hazards for Babies
Understanding which foods and objects are most dangerous can help you prevent choking before it happens. The following items are involved in the majority of infant choking incidents.
Food hazards
- Grapes and cherry tomatoes — their round shape can perfectly seal a baby’s airway. Always cut grapes lengthwise into quarters, never into round slices.
- Hot dogs — the size, shape, and texture of a sliced hot dog makes it one of the most common choking foods for young children. Cut lengthwise into thin strips, then into small pieces.
- Popcorn — small, hard, and irregularly shaped. Avoid entirely for children under age four.
- Nuts and seeds — hard, small, and difficult for babies to chew. Avoid whole nuts until at least age four. Nut butters should be spread thinly, never given by the spoonful, as a thick glob can block the airway.
- Hard candy and cough drops — smooth, round, and perfectly sized to lodge in a small airway.
- Raw carrots, celery, and apples — hard raw vegetables and fruits should be cooked until soft or grated finely before being offered to babies.
- Chunks of cheese or meat — cut into very small, thin pieces rather than cubes.
Non-food hazards
- Coins — one of the most frequently swallowed and choked-on objects in young children
- Button batteries — extremely dangerous if swallowed. They can cause chemical burns in the throat within two hours. Seek emergency care immediately.
- Small toy parts — Lego pieces, doll accessories, board game pieces, and anything that comes apart into small components
- Balloon pieces — deflated or popped balloon fragments are a leading cause of non-food choking deaths in children. The latex moulds to the airway, making it extremely difficult to remove.
- Pen caps, beads, and marbles — small, round objects that are easily picked up and placed in the mouth
Choking Prevention Tips
Prevention is always better than emergency response. These habits significantly reduce the risk of choking in babies and toddlers:
- Always supervise mealtimes. Never leave a baby or young toddler eating unattended, even for a moment. Sit with them, watch them chew, and make sure they are seated upright — not crawling, walking, or lying down while eating.
- Cut food into safe sizes and shapes. For babies under 12 months, food should be soft enough to mash between your fingers and cut into small pieces or thin strips. Avoid round shapes — cut grapes, cherry tomatoes, and hot dogs lengthwise.
- Avoid high-risk foods before age four. Popcorn, whole nuts, hard candy, whole grapes, and large chunks of raw vegetables should not be given to children under four years old.
- Keep small objects off the floor and out of reach. Get into the habit of scanning the floor regularly, especially if you have older children whose toys have small parts. Check under furniture and between couch cushions.
- Learn the difference between gagging and choking. Many parents panic at normal gagging and intervene when they should not, which can actually push food deeper. Understanding gagging as a healthy reflex helps you stay calm and respond appropriately.
- Introduce solid foods gradually. Start with soft, mashable textures and increase complexity slowly as your baby develops their chewing skills. Watch for signs of readiness — sitting up independently, showing interest in food, and loss of the tongue-thrust reflex.
- Take a first aid course. Knowing exactly what to do in a choking emergency reduces panic and saves critical seconds. Life Safe’s infant first aid courses cover choking, CPR, and other emergencies specific to babies and young children, with hands-on manikin practice at locations across Ontario including Toronto.
- Never hold a choking baby upside down by the feet. This outdated technique provides no advantage over proper back blows and risks dropping the baby or causing neck injury.
- Never try to pull the object out with your fingers unless you can clearly see it. A blind finger sweep can push the object deeper into the airway, converting a partial blockage into a complete one.
- Never slap a choking baby on the back while they are upright. The back blows technique requires the baby to be face-down with head lower than chest so gravity assists the process.
Frequently Asked Questions
Should I let my baby cough it out if they are choking?
If your baby is coughing forcefully, yes — let them cough. A strong cough is the body’s most effective way of clearing the airway. Stay close and monitor them. Only intervene with back blows and chest thrusts if the coughing becomes weak or silent, or if the baby cannot breathe, cry, or make sound.
What is the difference between gagging and choking?
Gagging is a normal protective reflex — the baby will cough, sputter, and may turn red, but can still breathe and make noise. Choking means the airway is partially or fully blocked — the baby may be silent, unable to cry, and their skin may turn blue or grey. Gagging is common when babies start solid foods and usually resolves on its own. Choking requires immediate first aid.
When should I call 911 for a choking baby?
Call 911 if the baby cannot breathe, cry, or cough, if back blows and chest thrusts are not clearing the object, or if the baby becomes unresponsive. If someone is with you, have them call immediately while you perform first aid. If you are alone, do 2 minutes of back blows and chest thrusts first, then call 911 on speaker while continuing.
Can back blows hurt my baby?
Back blows need to be firm to work — gentle pats will not dislodge an object. A properly delivered back blow between the shoulder blades will not cause injury. The risk of not acting during a choking emergency is far greater than the risk of a firm back blow. In a hands-on first aid course, you will practise the correct force on a manikin so you know exactly how firm to be.
What if my baby chokes on liquid or milk?
Babies frequently gag on milk or liquids during feeding. In most cases, the baby will cough and clear the liquid on their own. If the baby goes silent, turns blue, or cannot breathe, position them face-down on your forearm and deliver 5 back blows followed by 5 chest thrusts. Tilting the baby slightly downward helps gravity drain the liquid from the airway.
Learn Infant Choking First Aid Hands-On
Reading this guide is an important first step. But in a real emergency, you need the muscle memory that only comes from practice. Life Safe’s first aid courses include hands-on infant choking and CPR training with manikins, so you leave knowing exactly how much force to use and how to position your baby correctly.
Find a class near you: Toronto • Downtown Toronto • East York • Hamilton • Welland • Guelph