Constipation in 8-month-old babies may be related to improper diet, intestinal obstruction and other factors, patients can improve their condition through general treatment, surgical treatment and other ways. 1. Improper diet: the child should pay attention to the dietary laws, eight-month-old babies have begun to gradually add complementary foods, such as formula feeding, should be equipped in accordance with the instructions, do not blend too thick, constipation symptoms are more pronounced can be carried out abdominal massage, four fingers together, to the navel as the center to do a clockwise direction massage, to promote peristalsis conducive to defecation. 2. Intestinal obstruction: 8 months of the baby is the high incidence of intussusception, often manifested as abdominal mass, constipation, crying and irritability. Need to consult a doctor in time, according to the situation to be prescribed by the air enema reset or surgical treatment. Generally speaking, a short period of 1-2 days or so without stools can be temporarily observed closely, such as the baby for a long time without stools. It is recommended to consult a doctor in time, and actively cooperate with the doctor’s treatment.