What to say

What to say when your toddler hits the baby

Three things to say the moment it happens, why each one works, and how to lower the odds of the next time.

The moment: Your older child hits, squeezes too hard, or lashes out at the new baby - sometimes affection turned rough, sometimes clear frustration Ages: 3-7 years

Say this

1. Block First, Talk Later

easy Β· immediate

  • Stop. I'm here. No hitting the baby - I'll help you both.
  • I won't let you hurt him. I'm keeping everyone safe.
  • I'm right here with you.
  • We'll talk once everyone's calm.

Why it works

A child mid-lash-out is running on an overwhelmed system, not executing a plan - language barely gets in. Stepping in with your calm body and very few words delivers the one message that matters: I've got this, everyone's safe.

The line for you: Safety first, feelings second, talking last. I don't need words to keep everyone safe.

2. Name the Worry Underneath

intermediate Β· 5-10 minutes

  • I think it feels wobbly watching the baby get close to your things, and to me.
  • This baby is lucky - they get you as a big sibling. And my love for you stays all yours. Nobody can take your share.
  • You can tell me 'mine' or 'not now' with words. I'll help the baby wait.
  • Sometimes being the little one looks kind of cozy, huh. Want to play baby for five minutes with me?

Why it works

Aggression toward a new baby is usually worry about being replaced, not real dislike of the baby. Naming that fear directly, and saying your love stays whole, addresses what's actually driving the behavior.

The line for you: This is worry wearing the costume of aggression. My job is to answer the worry.

3. Build the Standing Plan

intermediate Β· 10-15 minutes

  • When the baby gets close to your things, your body gets a big push to grab or hit. That push is okay - hitting isn't. Let's give the push somewhere to go.
  • What could your hands do instead - squeeze this pillow tight, or come find me?
  • I'm going to stay close by when you two are together, so I can help before it gets big.
  • This keeps happening because something's missing, not because you're being bad. We're figuring it out together.

Why it works

When the same thing keeps happening despite calm handling each time, it's a missing skill, not a behavior to punish harder. Giving the grab-or-hit urge one standing, practiced outlet, decided together in a calm moment, is what actually starts to change it.

The line for you: This keeps coming back because a skill is still missing, not because my child is bad. I can keep hunting for the gap.

Before it happens again

  • Sort belongings visibly ahead of time - protected treasures up high, shared toys in a basket both kids can reach - so there's less to guard in the moment
  • Give your older child words for 'no' and 'mine' so their hands don't have to do the talking when the baby gets close to something they care about
  • Say out loud, more than once, that your love for them stays whole - a new baby doesn't split it
  • If this keeps happening the same way, treat it as a skill gap rather than defiance, and plan your own response in advance instead of reacting fresh each time
  • Stay within arm's reach whenever your older child is near the baby during this stretch, so you can block before contact instead of after

If it keeps happening

Read the full guide

Questions parents ask

Why is my toddler suddenly aggressive toward the new baby?
Because the baby arrived and their world got smaller without anyone asking them. Aggression at this point is almost always about your attention rather than about the baby. It usually eases as they find other ways to get hold of you, which is why the response has to include them rather than only protect the baby.
Should I leave them alone together?
Not yet, and there is no shame in that. Supervision is not distrust, it is what makes it possible for you to stay calm rather than reacting in alarm, which is what actually teaches the lesson.
How do I stop resenting my older child for this?
It helps to remember that they are not choosing it. A three year old with a new sibling is managing a loss they cannot name. Naming it out loud to them, and to yourself, takes a surprising amount of heat out of the situation.

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