Biceps soreness leads to stretching not straight consider muscle strain, myofasciitis, cervical spondylosis, for the cause of the general treatment, drug treatment, physical therapy, etc.. 1. Muscle strain: need to rest, avoid tired work, local massage, external diclofenac diethylamide emulsion, hot compresses or wax therapy. It can be treated with medicines that can relieve tendon and activate blood circulation, such as oral relaxation tablets or elongation capsules. 2. Myofasciitis: it can be treated with manipulation and release, interferential electric therapy, or small needle release. Oral ibuprofen and other non-steroidal anti-inflammatory analgesic drugs can also be relieved. 3. Cervical spondylosis: cervical traction, acupuncture, neuromuscular electrical stimulation treatment, oral cervical Fukang granules or methylcobalamin. Biceps soreness caused by not straightening need to go to the hospital, after a clear diagnosis, under the guidance of the doctor for treatment, do not blindly use drugs.