After diarrhea after chemotherapy, patients will usually recover slowly after symptomatic treatment under the guidance of doctors. Chemotherapy-associated diarrhea is a common side effect of chemotherapy for cancer patients, which will reduce the quality of life of the patients, and will also directly lead to the disturbance of water-electrolyte balance, which may lead to shock and death in severe cases. However, after symptomatic treatment, most of them will recover slowly. The emergence of chemotherapy-related diarrhea, we must consult a doctor in a timely manner, under the guidance of a doctor to standardize the treatment, can be given loperamide to inhibit intestinal peristalsis, increase the absorption of water and electrolytes; give octreotide treatment, reduce the thromboxane A2 stimulate the secretion of intestinal epithelial cells of the chlorine atoms and the role of water; can also be given montelukast or aluminum thioglycollate to stop the diarrhea and to protect the mucous membranes of the intestinal tract. In addition, the former should pay attention to small meals and drink more warm water. Specific treatment can consult a professional physician’s opinion, drugs need to follow the doctor’s instructions for rational application.