Few bowel movements after a fall may be caused by lumbar spine injury resulting in spinal compression of nerves caused by constipation, may also be the patient himself patient has constipation, intestinal obstruction, colorectal cancer and other diseases resulting in different treatment according to the cause. 1. Constipation: constipation will lead to the symptom of less defecation, patients can take lactulose oral solution, polyethylene glycol electrolyte dispersal and other osmotic laxatives as prescribed by the doctor, and can also take phenolphthalein tablets, bisacodyl enteric-coated tablets and other stimulating laxatives. 2. Intestinal obstruction: For the defecation caused by intestinal obstruction, patients can follow the doctor’s instruction to use sodium chloride injection, potassium chloride injection, glucose injection to correct the water and electrolyte, in addition, patients can also take adhesion release surgery, intestinal resection anastomosis, intestinal anastomosis and other surgical procedures for treatment. 3. Colon cancer: colon cancer can also lead to the phenomenon of low defecation, and patients can follow the doctor’s instruction to undergo right hemicolectomy, transverse resection, left hemicolectomy and other surgical treatments. Patients can also take chemotherapy treatment, patients can use fluorouracil injection, irinotecan hydrochloride injection, capecitabine injection and other chemotherapeutic drugs as prescribed by doctor. Patients should seek timely medical treatment and follow the doctor’s instructions when they have fewer bowel movements after a fall.