There are many reasons for the right subcostal pain in the ventricular fossa, the common ones are cholecystitis, costochondritis, rib fracture, etc. The most common ones are cholecystitis, costochondritis and rib fracture. 1. Cholecystitis: the gallbladder is located in the right quarter of the ribs, when the gallbladder inflammation occurs, it can cause subxiphoid or right subcostal pain, which can be radiated to the back of the right shoulder, and it mostly occurs when the person has a full meal or eats greasy food, and it can be accompanied by fever, nausea and other symptoms. 2. Costal chondritis: Inflammation of the cartilage at the junction of the sternum and the ribs, which can be found in the right side of the ribs of the ventral fossa of the heart, manifested as pain, swelling, and the symptoms are aggravated by coughing, deep breathing and other activities of the chest wall. 3. Rib fracture: Fracture occurs in the right side of the ribs can also cause this symptom, mostly due to violence, often accompanied by chest deformity, abnormal breathing. There may be other causes of subcostal pain on the right side of the ventricular fossa, such as pneumonia, etc. It is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease and standardize the treatment.