Stomach cancer symptoms include diarrhea: 1. Due to the tumor, stomach cancer patients can cause the peristaltic function of stomach to weaken or disappear, thus affecting the digestive function of intestine to appear indigestion, resulting in diarrhea, increased number of stools and unshaped stools. If it is early gastric cancer, it can be removed surgically and radiotherapy can be given after surgery. If it is complete gastric cancer, conservative treatment is the main treatment; 2. Gastric cancer patients are caused by improper diet, and this condition is given symptomatic hemostatic treatment, after which the symptoms can be improved; 3. Gastric cancer patients have imbalance of intestinal flora due to drug factors during treatment, and this condition can also cause diarrhea. It is recommended to adjust the treatment plan in time to strengthen the regulation of intestinal flora, and then to carry out diarrhea treatment, so that diarrhea symptoms can be gradually improved. Note that patients with stomach cancer can have diarrhea symptoms, but not all diarrhea symptoms are caused by stomach cancer. Therefore, patients with stomach cancer should pay attention to diarrhea when it occurs, further clarify the cause and give targeted treatment with the actual situation.