1. Promote digestion: Yogurt contains probiotics, which can help children digest food and relieve digestive problems such as diarrhea and constipation.

2. Enhance immunity: Lactic acid bacteria in yogurt can enhance children's immunity and prevent colds and other diseases.

3. Promote bone development: Yogurt is rich in calcium and vitamin D, which can help children promote bone development and prevent rickets and other diseases.

4. Improve skin quality: Lactic acid bacteria in yogurt can regulate intestinal flora, improve children's skin quality and reduce acne and other problems.

However, drinking too much yogurt can also do some harm to children's health:

1. lead to obesity: yogurt contains high sugar and fat, and excessive drinking will lead to obesity in children.

2. increase the risk of tooth decay: the sugar in yogurt is easy to breed bacteria, leading to tooth decay in children.

3. Cause allergic reaction: Some children may be allergic to lactose or milk protein in yogurt, and excessive drinking may cause allergic reaction.