The elbow bone hurts when pressed may be caused by humeral fracture, tennis elbow, rheumatoid arthritis and other diseases. 1. Humerus fracture: the occurrence of this disease is related to direct violence and indirect violence, such as heavy impact, crush injury, blow, etc.. Due to the pain, swelling and deformity of the upper arm after the injury, if the proximal humerus is fractured, the patient will have the symptom that the elbow bone hurts when pressed, which is a manifestation of compression pain. 2. Tennis elbow: this disease is mainly due to long-term, repeated force activities of the wrist, resulting in excessive rotation of the forearm, caused by the humerus outside the upper ankle to produce chronic injury caused by the common symptoms of pain on the outside of the elbow, burning, etc., which can be manifested as a pain in the elbow bone when pressed. 3. Rheumatoid arthritis: the cause of this disease is not yet clear, research has shown that it may be related to heredity, autoimmunity, pathogenic microbial infections, smoking, cold stimulation and other reasons. Affected joints will appear pain, swelling, pressure and other symptoms, common parts of the palm of the hand, wrist, etc., but can also occur in the elbow joint, so some of the patient’s elbow bone pain when pressed. There are more causes of pain when pressed, so it is necessary to go to the hospital to clarify the cause of the disease.