There are many types of laxatives, such as expanding laxatives, gastrointestinal power drugs and probiotics. 1. Swelling laxatives: such as lactulose, etc., after taking can absorb water in the colon, increase the water content of feces, soften feces, increase the volume of feces, and then promote fecal discharge. 2. Gastrointestinal dynamics drugs: such as domperidone, mosapride, etc., mostly used in conjunction with other drugs to promote intestinal peristalsis, so as to achieve the purpose of promoting defecation. 3. Probiotic drugs: such as bifidobacterium trifidum capsules, lichen bacillus capsules, etc., can supplement the intestinal bacteria, adjust the balance of intestinal flora, promote intestinal peristalsis, promote defecation. There are also many laxative drugs in the clinic, it is recommended to go to a regular hospital, consult a professional doctor, cooperate with the doctor to complete the relevant examination, under the guidance of the physician for treatment, to avoid their own blind use of drugs.