The hazards of laxatives include stubborn constipation, water-electrolyte disorders, and colorectal cancer. 1. Persistent constipation: long-term use of laxatives will make the body less sensitive to laxatives, once the drug is stopped, even if there is feces, it can not stimulate the nerve cells of the intestinal wall to produce stool, resulting in persistent constipation. 2. Water-electrolyte disorders: the use of laxatives will cause a large loss of water and ionic substances in the body, resulting in water-electrolyte disorders. 3. Colorectal cancer: some laxatives contain anthraquinone chemicals, long-term use will make the intestinal mucosa atrophy and deformation, further increasing the chance of cancer. There are other hazards of laxatives such as prolapse, therefore, they should be standardized under the guidance of a doctor, and if there is any discomfort, it is recommended to consult a doctor in time.