Soap and water laxative will have side effects, because soap and water belongs to the alkaline liquid, will stimulate the perianal skin mucous membrane and cause its damage, easy to cause colitis and other diseases. Soap water belongs to the alkaline liquid, the use of soap water enema will cause irritation to the perianal skin mucous membrane, and damage to the skin mucous membrane, not only will cause colitis and other diseases, but also cause gastrointestinal dysfunction, therefore, the use of soap water laxative is a side effect. When the patient is constipated, it is recommended to clarify the cause of constipation, can choose to open the drug laxative, this kind of drug long-term use will produce dependence, need to be used under the guidance of a doctor, in order to avoid adverse reactions. If the symptoms of constipation are not relieved or accompanied by other symptoms, you should go to the hospital in a timely manner, to identify the cause and then give targeted treatment.