1. Fruits: Apples, bananas, pears, peaches and other fruits are rich in cellulose, which helps to promote intestinal peristalsis and relieve constipation.

2. Vegetables: carrots, pumpkins, spinach, broccoli and other vegetables are rich in dietary fiber and water, which helps to soften and promote defecation.

3. Whole grains: Whole grains such as oats, brown rice and whole wheat bread are rich in dietary fiber and carbohydrates, which helps to increase the water and volume in the intestine and promote defecation.

4. Beans: Beans such as tofu, soybeans and mung beans are rich in dietary fiber and protein, which helps to promote intestinal peristalsis and relieve constipation.

5. Drink enough water: Drinking enough water for your baby will help to soften the stool and promote defecation.

It should be noted that if the baby has added solid food, it is necessary to gradually introduce these foods and observe the baby's reaction. If the baby has any discomfort or allergic reaction, stop using it immediately and consult a doctor.