A strain of the pectoralis muscle usually takes 2-4 weeks to recover. Strains in this area are relatively rare in clinical practice and are often seen only in patients who do fitness exercises or professional sports players. After a strain in this area, the prognosis is very good as long as it is treated promptly, because the blood supply around the pectoralis major is very rich and recovery is not a problem as long as appropriate treatment is taken. However, such patients should pay attention to the following matters in the process of recovery: 1. In the process of recovery, it is important to keep the brake rest. It is generally recommended that patients can use a scarf or shoulder sling to fix the affected upper limb in an internally rotated position, while the forearm is suspended in front of the chest and the elbow joint is flexed 90 degrees to keep the pectoralis major muscle maximally relaxed to facilitate its recovery. 2, patients must follow the doctor’s instructions and not be able to move too early. 3, after the relevant symptoms have reached complete remission, patients have to go through a period of functional After the symptoms are completely relieved, the patient must go through a period of functional exercise before being able to do activities of higher intensity. It is generally recommended that patients do stretching exercises such as chest expansion after jogging, and should be done gradually, not in one go.