Pain when pressing on the chest is considered to be chronic gastritis or stomach cancer. In general, if there is a lesion in the stomach, the early symptoms are usually atypical, usually manifesting epigastric discomfort, distension, vague pain, and a feeling of fullness. It may also be accompanied by nausea, vomiting, bloating, acid reflux and other symptoms. If a clear diagnosis is needed, it is recommended to perform gastroscopy, which is relatively more intuitive and can detect lesions in the gastric mucosa. If it is considered to be caused by chronic gastritis, oral medication is needed for treatment, such as omeprazole or rabeprazole. If there are tumors or lesions or lumps in the stomach cavity, it is necessary to take a small amount of tissue out for further pathological examination to make a clear diagnosis. If the diagnosis is caused by gastric cancer, radical surgery for gastric cancer is recommended, including the need to remove a part of the stomach, including the tumor, and also the need to clear the lymph nodes inside the area.