Calf pain may be caused by muscle strain, lumbar disc herniation, deep vein thrombosis, etc. It is recommended that patients inject drugs such as tretinoin injection and adenosine injection under the guidance of doctors according to the cause of the disease. 1. Muscle strain: If the pain in the calf is caused by muscle strain, the patient can rest and massage to relieve it if the symptom is mild; if the symptom is more serious, the patient can inject the glucocorticoid hormone drugs, such as Triamcinolone acetonide injection and Prednisolone acetate, etc., under the guidance of the doctor. 2. Lumbar disc herniation: If the patient suffers from lumbar disc herniation, it may also cause the symptoms of calf pain, and it is recommended that the patient can be injected with nutritive nerve injections under the guidance of the doctor, such as adenosine injection, methylcobalamin injection and so on. 3. Deep vein thrombosis: patients suffering from deep vein thrombosis can be injected with belly shot under the advice of doctor, belly shot is also known as low molecular heparin, mainly used for anticoagulation treatment, which can effectively relieve the discomfort of patients. It is recommended that patients can go to the hospital for a comprehensive examination, and timely medical treatment, so as not to delay the condition.