Stomach bloating and difficulty in defecation are usually considered to be symptoms caused by constipation. According to the causes that cause stomach bloating but no defecation, they are divided into functional constipation and organic constipation, and according to the different causes, different treatments are needed. Common causes and treatment 1, functional constipation: In daily life, if the patient eats too little can lead to too little stool formation, diet is too fine, lack of food fiber can lead to slow intestinal peristalsis, coupled with irregular bowel movements, lack of exercise and other factors, may cause bloating, constipation. Patients can adjust their diet structure and eating habits by drinking more water, eating more food rich in coarse fiber, such as celery, spinach, etc., and avoid eating too much greasy and spicy food. Develop the habit of regular bowel movements, avoid staying up late and straining, and promote the peristalsis of the gastrointestinal tract by appropriate activities. If necessary, use medications as prescribed by your doctor, such as probiotic tablets, Mosapride, Etopride, etc., to promote gastrointestinal motility and improve symptoms. Do not take stimulating laxatives privately, so as not to aggravate the condition; 2, organic constipation: if patients have intestinal obstruction, intestinal tumors, colitis, diverticulitis, congenital megacolon and other intestinal diseases, will also cause abdominal distension, defecation symptoms. In this case, the patient should treat the specific cause, if it is intestinal obstruction, the obstruction should be lifted through surgery if necessary, if it is enteritis, anti-infection treatment should be followed by symptomatic treatment, if it is intestinal tumor, such as colorectal cancer, it needs to be removed surgically under the guidance of a doctor, and cooperate with chemotherapy to control the development of the disease.