Pain in the liver area of the right side of the rib cage is mainly related to the abnormalities of the surrounding tissues and organs, and the causes of the corresponding conditions mainly include costochondritis, destruction of the rib cage bone, lung diseases and liver diseases. 1. Costochondritis: Infection, trauma and other causes lead to inflammation of the costal cartilage, causing irritation to the surrounding tissues, which will cause pain and discomfort when knocking on the corresponding area. 2. Bone destruction of ribs: Tumor lesions, resulting in bone destruction, can also cause related symptoms, common causes such as metastatic tumor. 3. Lung diseases: mainly include lung tumor and pleurisy, which will cause irritation to the pleura and cause pain during percussion. 4. Liver diseases: Liver inflammation or liver tumor involving the hepatic peritoneum will cause corresponding symptoms when knocking on the corresponding parts. In addition, such as cholecystitis and other gallbladder diseases, recent trauma to the upper right abdomen resulting in local soft tissue injury can also lead to pain in the liver area. When obvious pain and discomfort occurs, it is necessary to consult a doctor in time for observation, diagnosis of the condition and standardized treatment under the guidance of the clinician.