Pain at a point on the left side of the rib cage may have the following causes: 1, the rib cage itself, such as benign tumors of the rib cage, osteoma, bone-like osteoma, or metastases to the rib cage due to other malignant tumors, or due to hematologic disorders, such as multiple myeloma, resulting in pain at a point on the rib cage, then CT, x-ray or ECT should be performed to confirm and treat the pain. 2.Intercostal neuralgia, intercostal neuralgia is often a pain at a point between the ribs, hidden or radiating pain, then other diseases should be excluded to diagnose intercostal neuralgia, often requiring nerve nutrition and local closure treatment. 3.Herpes zoster, in the early stage of herpes zoster can appear pain at a point in the rib cage, after the incubation period there will be herpes, then it is necessary to Visit a dermatologist for consultation and treatment.