Plate support arm pain may be caused by physiological factors, may also be caused by arm muscle strain. 1. Physiological factors: when performing the exercise of flat support, the arm muscles need to be contracted and flexed and stretched and other activities, local lactic acid accumulation in the arm to cause pain. Generally do not need treatment, adequate rest, massage after exercise can be relieved. 2. arm muscle strain: long time lack of exercise after the flat support time is too long or improper posture, may lead to arm muscle strain, causing pain. 72 hours of cold compress, 72 hours after the hot compress, full rest can relieve pain. If the pain is obvious, non-steroidal anti-inflammatory drugs such as ibuprofen can be used to relieve the symptoms. The symptoms of arm pain after plate support, after excluding physiological factors, it is recommended to consult a doctor in time to avoid delaying the condition.