The soreness of the arm after being cold is mainly due to the cold stimulation of the limb, which leads to vasoconstriction, poor muscle circulation, and relative lack of oxygen in muscle metabolism, which leads to the accumulation of metabolites and produces muscle soreness. In this case: 1, to do limb warmth, away from the cold environment. If you work outdoors, the temperature is relatively low, you can add clothing. If the indoor temperature is low, raise the indoor temperature. 2, to brake rest, because the muscle is already in the lack of oxygen metabolism, so continue to move will aggravate the muscle pain, aggravate the muscle damage. 3, can be local physiotherapy, heat, that is, heat therapy, each time do 10-20 minutes, 2-3 times a day. 4, if the symptoms are more serious, you can take oral non-steroidal anti-inflammatory drugs The commonly used ones are diclofenac, celecoxib. On this basis can be observed for a few days, if the symptoms are significantly relieved, continue to keep warm, pay attention to the protection can. If the symptoms do not ease or even worsen, seek medical attention.