Diffuse gastric cancer does not have obvious symptoms in early stage, only that it may have weakness, bloating, anorexia and so on. Like most stomach cancers, diffuse stomach cancer does not have characteristic symptoms and manifestations in early stage, only some patients may have weakness, bloating, anorexia, etc., and some may have abdominal pain, black stools, etc., but the situation is usually mild, so it is easy to be under-diagnosed or misdiagnosed. If the above symptoms exist for a long time, after taking ordinary medication is ineffective, you need to go to the hospital in time for gastroscopy, pathology biopsy and other tests to diagnose the cause of the disease, so as to take targeted treatment, the earlier the treatment, the higher the cure rate.