Under normal circumstances, parents can solve the baby's indigestion and diarrhea by using drugs, massaging abdomen and daily care according to the doctor's advice. The specific situation is analyzed as follows:

1. Drug use: The baby has indigestion and diarrhea, and parents can treat the baby with drugs with good therapeutic effect according to the doctor's advice, such as Huoxiang Zhengqi Water, Fengliao Changweikang Tablet and Changyanning Oral Liquid.

2. Massage the abdomen: Massage the abdomen can promote the blood circulation of the gastrointestinal tract, and then relieve the gastrointestinal discomfort. Therefore, if the baby has indigestion and diarrhea, parents can rub their hands and massage the baby's abdomen clockwise, which can relieve the discomfort.

3. Daily care: Parents should pay attention to pacify their babies and give them plenty of hot water. They can prepare light and digestible complementary foods for their babies, such as millet porridge, lotus root starch and soft noodles, so as to promote the recovery of their bodies.