Right anterior chest and right posterior back arm pain is usually caused by strenuous exercise, such as lifting and carrying heavy objects for a long time, muscle tension, and prolonged exertion, resulting in muscle strain, which leads to the formation of sterile inflammatory lesions and the accumulation of inflammatory metabolites. Especially in the case of cold, after labor without active warmth, sweat evaporation will lead to local cold, blood circulation is slowed, inflammatory metabolites further accumulation, stimulation of peripheral nerves, there will be a painful sensation. During anterior chest and posterior back and arm activities, muscle contraction will stimulate the localized strain, leading to further aggravation of pain symptoms. In this case, the strained muscles should be fully relaxed and rested in order to promote recovery.