The method of rapid defecation for constipation in a nine-month-old child depends on the specific cause of the problem. Physiological factors, you need to increase activity, improve dietary structure and local massage and other ways to relieve; pathologic factors, such as dyspepsia or intestinal obstruction, etc., you need to follow the doctor’s advice as soon as possible to give symptomatic treatment. 1. Physiological factors: due to poor diet or lack of activity caused by functional constipation, it is recommended to strengthen the nine-month-old child’s dietary structure adjustment, more dietary fiber-rich foods, such as bananas, celery, etc., and increase the amount of activity to promote gastrointestinal peristalsis and improve defecation. You can also assist abdominal rubbing to help intestinal peristalsis stool discharge. 2. Pathological factors: (1) dyspepsia: dyspepsia can lead to functional constipation, parents need to take their children to the hospital in a timely manner, follow the doctor’s instructions to take oral compound pepsin to help digestion, assisted by bacillus subtilis bacillus granules and other intestinal bacteria to help alleviate the need to improve the digestive function of the gastrointestinal tract and to promote the earliest possible recovery. (2) Intestinal obstruction: Intestinal obstruction is usually caused by organic diseases, which will lead to organic constipation, usually more serious, and need to follow the doctor’s advice to give surgical treatment in time, to promote the relief as soon as possible, to avoid delaying the condition. When children have constipation, please go to the hospital in time, active treatment, so as not to delay the condition. The above drugs should be used in accordance with medical advice.