Women’s left back pain, commonly due to local injury, back muscle strain, heart disease, as follows: First, local injury: back muscles by direct impact or in the process of exercise, resulting in back muscle injury, can be manifested as left back pain symptoms, and accompanied by muscle spasm, tension, pain will increase when pressed. Second, back muscle strain, the left upper limb continues to maintain a fixed position, will make the left back and around the scapula tension, spasm, and accompanied by pain. Third, heart disease: patients suffering from serious heart disease such as angina pectoris can also cause the left scapular back, with involvement pain symptoms. Therefore, women with pain in the left back should be diagnosed and treated early, and the cause should be clarified as soon as possible, otherwise the diagnosis will be delayed and the treatment will be delayed, leading to more serious consequences, such as severe cardiac insufficiency, severe muscle spasm, tension, and hard knots within the muscle, thus limiting the movement of the left shoulder joint and the left scapula.