Women with left rib pain need to be alert to costochondritis, intercostal neuralgia, rib fracture and other diseases. 1. Costal chondritis: inflammatory reaction of the cartilage at the junction of sternum and ribs, manifested as pain in the chest, pinprick or burning pain, fixed position, localized palpable swelling, and pain is obvious when pressure is applied. 2. Intercostal neuralgia: the intercostal nerves are stimulated by viral infection, trauma and injury, causing pain in one or more intercostal innervated areas, paroxysmal or persistent pain, distributed in strips along the intercostal nerves, and the pain can be aggravated by coughing or deep breathing. 3. Rib fracture: impact or extrusion leading to rib fracture, manifested as chest pain, chest tightness, etc., coughing or changing position when the pain is aggravated, localized visible skin lesions or bruises. Left side rib pain can also be seen in other diseases, it is recommended that patients seek medical attention in time to clarify the diagnosis and active treatment.