Whether it is normal for a 3-year-old child to have a bowel movement once every 3 to 4 days is related to the child’s mental state and the nature of the stool. If the mental state is good and the stool is soft, it is mostly normal, while if it is difficult to defecate, dry and hard, or with blood, it is mostly abnormal. If the child’s mental state, diet, sleep and other conditions are relatively good, the stool shape is soft, and the body grows and develops normally, it is generally normal and does not require special treatment. If it is difficult to defecate, dry stools or with blood, usually belongs to the abnormal, there may be constipation, you can give the child to adjust the diet structure, to ensure balanced nutrition, eat more fruits and vegetables, supplement dietary fiber, drink plenty of water, appropriate exercise, to promote gastrointestinal motility. If not relieved, need to consult a doctor, follow the doctor’s advice to give probiotics and other medication. If there is persistent difficulty in passing stools or other abnormalities, it is recommended to go to the hospital in time to clarify the cause of the disease and follow the doctor’s instructions.