The causes of pain on the outside of the left little toe include soft tissue injury, arthritis, bone fracture, etc., which should be identified in time in the hospital. 1. Soft tissue injury: long time wearing tight shoes and socks can lead to extrusion, friction and violent impact, which can lead to soft tissue injury on the lateral side of the left little toe, manifesting symptoms such as redness, swelling, heat, pain and so on. In severe cases, the walking function can be affected, which can be relieved by wearing loose shoes and socks, resting and applying hot compresses. 2. Arthritis: seen in gouty arthritis, due to elevated levels of uric acid in the body to form stones in the left little toe pain. This pain is more intense, oral ibuprofen, colchicine and other drugs to relieve pain symptoms. 3. Fractures: crushing, violent blows, etc. caused by the left little toe fracture, swelling, pain and other symptoms, go to the hospital in a timely manner to avoid secondary injury. Left toe pain may also be related to osteoarthritis, lumbar disc herniation and other diseases, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment. All of the above drugs must be taken under the guidance of a professional physician.