Stomach sometimes like a knife cut pain, a moment to consider may be related to stomach spasm, gastritis, gastric ulcer, stomach tumors and other pathological factors, different factors, the treatment is also different, generally based on drug or surgical treatment. 1. Stomach spasm: if the diet improperly ate raw cold food, stomach cold or mental tension caused by stomach spasm occurs, resulting in stomach suddenly like a knife cut like pain, a moment after the phenomenon. Scopolamine can be applied to relieve the spasm, after the application of dry mouth, red face, pupil mild diffusion and other adverse reactions may occur. 2. Gastritis: gastritis will have different degrees of damage to the gastric mucosa, when the damaged mucosa is subjected to some kind of stimulation, there may be a knife-like pain, which will be relieved after a while, you can orally take aluminum sulfate and other drugs to protect the gastric mucosa, and nausea, dry mouth, diarrhea, and other adverse reactions may occur after oral intake. 3. Gastric ulcer: the gastric mucosa has ulcer surface, when the gastric acid is stimulated by excessive secretion, it will stimulate the ulcer surface, resulting in the stomach like a knife-like pain, and the symptoms will disappear after a while, you can orally rabeprazole and other acid inhibitors, oral may appear headache, nausea, abdominal pain, diarrhea and other adverse reactions. 4. Stomach tumor: If there is a tumor in the stomach, when the tumor is stimulated, there will be cutting pain, but most of them will be accompanied by the symptoms of emaciation and loss of appetite, which is usually treated mainly by surgery. All the above medicines should be applied under doctor’s guidance. If you often have the symptom that your stomach sometimes hurts like a knife cut, and then it gets better, it is recommended that you go to the hospital as soon as possible and get treated under doctor’s guidance.