Not pooping for half a month may be caused by constipation, enteritis, intestinal obstruction, etc. Treatment needs to be based on the cause to determine the next steps. This includes having life and diet modification, medication (e.g. polyethylene glycol bulk, lactulose solution), further examination, etc. Constipation can be divided into functional constipation and organic constipation. Functional constipation is mainly regulated; organic constipation requires drug treatment or even surgery. 1. Life and diet regulation: such as eating more vegetables and fruits, moderate exercise, regular defecation and so on. 2. Drug treatment: such as polyethylene glycol dispersions, lactulose solution and other laxatives; such as Keserol, glycerin suppositories and other anal plug drugs. 3. Further examination: enteroscopy, stool routine and other tests to rule out Crohn’s disease, ulcerative colitis, intestinal masses and other diseases, such as intestinal masses also need to consider surgical treatment. For half a month without defecation treatment, it is recommended to consult a doctor to clarify the type and cause of constipation after guidance.