Regular laxatives are definitely not good, often take laxatives have many disadvantages: First, the intestinal wall nerve receptor cells to reduce the stress, even if there is enough feces in the intestine, can not produce normal peristalsis and defecation reflex, thus leading to stubborn constipation, making the treatment of constipation more difficult. The second is to cause intestinal dependence on the drug, once the drug is discontinued, constipation will be more serious, resulting in the formation of the drug that is discharged, stopping the drug more constipated condition, so that later the stool does not work, the drug is ineffective. Third, stimulate the gastrointestinal, affecting the digestive and absorption functions, nausea, vomiting, abdominal pain, emaciation, weakness and other symptoms, Chinese medicine believes that taking laxatives for a long time will damage the righteousness is this reason. Pregnant women, breastfeeding patients and acute abdominal pain, intestinal tumors, hypothyroidism, constipation should not abuse rhubarb and other laxatives to avoid accidents. Fourth, the long-term use of senna, rhubarb, aloe and other laxatives can lead to colonic nigrosis.