Pain above the belly button may be caused by gastritis or gastric ulcer. Generally speaking, the early symptoms of gastritis or gastric ulcer are atypical, mostly manifesting as abdominal pain, bloating, nausea, vomiting, acid reflux, belching, etc. If necessary, a gastroscopy or CT examination of the upper abdomen is required. Gastroscopy can find out whether the lesions in the mucosa of the stomach are inflammatory lesions or ulcerative lesions, and after the diagnosis is clear, oral medication can be used for symptomatic treatment. In addition, it may also be a condition of early appendicitis. In the early stage of appendicitis, there is pain in the upper abdomen or around the belly button, and slowly the pain shifts to the right lower abdomen, that is, the pain in the appendix area. A routine blood test can be performed, usually with elevated white blood cells, and an ultrasound examination of the appendix can reveal swelling of the appendix, oozing around the appendix or fecal stones in the appendix cavity, and the appendix needs to be removed after the diagnosis is clear.