Ordinary diarrhea and diarrhea of intestinal cancer can be distinguished from clinical symptoms, etiology and treatment. 1. Ordinary diarrhea: The main clinical manifestations of ordinary diarrhea include increased frequency of stools, dilute watery stools, etc. The causes of ordinary diarrhea are usually caused by bacterial infection, viral infection, eating spicy or cold food. The causes of ordinary diarrhea are usually bacterial infection, viral infection, eating spicy or cold food, such as eating chili pepper, ice-cream may appear diarrhea, abdominal pain, you can follow the doctor’s advice to use Clostridium typhimurium live bacterial dispersions, loperamide hydrochloride capsules and other drugs to treat. 2. Diarrhea caused by intestinal cancer: besides diarrhea, there will be symptoms such as blood in stool, thinning of stool and mucus stool. Diarrhea caused by intestinal cancer is usually related to the stimulation of intestinal tract by intestinal cancer lesions. Most of the patients have chronic diarrhea and the lesion lasts for a long time, which can be treated by surgical resection according to medical advice. Patients with diarrhea should follow the doctor’s prescription in daily life, take light diet, prevent electrolyte disorders, and consult doctor when symptoms worsen.