Left shoulder pain and left scapula pain may be caused by fasciitis, diseases of the shoulder joint itself, cervical spondylosis, radiating pain of internal organs and other reasons. 1. Fasciitis and shoulder joint diseases: long-term heavy physical labor or patients with left habitual hand can lead to fatigue injury around the shoulder joint and scapula, and the emergence of aseptic inflammation, resulting in pain; degenerative lesions, trauma, dislocation of the shoulder joint itself can lead to shoulder joint osteophytes, joint capsule degeneration and other conditions, and at the same time pulling on the scapula, the above symptoms may also occur. 2. Cervical spondylosis, visceral diseases: when cervical spondylosis compresses the spinal nerve roots or spinal nerves, pain in the shoulder and scapula may occur, and in severe cases, the pain will spread to the whole upper limb and hand along the nerve pathway, which is generally known as radicular pain in clinical practice; in addition, when certain visceral diseases occur, radiating pain in the left limb will also occur, such as pancreatitis, angina, and other diseases. Left shoulder pain and left shoulder blade pain symptoms alone sometimes can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results in order to make an accurate judgment, it is recommended that the cause of the disease under the guidance of a doctor.