Pain in the right side of the chest may be caused by gallbladder stones, which can be further clarified by liver and gallbladder ultrasonography, and if stones are found in the gallbladder, they are the lesions caused by the stones. After the diagnosis is clear, if the stones are large and the pain is recurrent, laparoscopic cholecystectomy can be considered. If there are no stones in the gallbladder, the condition may be caused by gastritis or gastric ulcer, which may require gastroscopy to further confirm the diagnosis. If gastroscopy does not reveal any problem, it may be caused by tumors in the hepatic flexure of the colon or liver tumors, and CT or colonoscopy of the upper abdomen may be performed if necessary to further confirm the diagnosis. It may also be caused by pleurisy, which can be further clarified by chest CT. After the diagnosis is clarified, symptomatic treatment is needed, such as oral painkillers and so on.