Generally 6-8 weeks for cracked ribs, you can gradually engage in physical activities, and if you engage in heavy physical activities, it is recommended to do so after 3 months, and the specific time should be judged according to the individual’s situation. After the treatment of fractured ribs, rehabilitation training should be carried out step by step, according to the degree of healing, generally about 6 to 8 weeks can start to engage in appropriate activities, 3 months later can achieve complete healing, in principle, can engage in heavy physical labor, but the specific time and activities need to be based on the individual situation to judge, can not be generalized. Due to the severity of cracked ribs and different treatment measures, the healing degree is also different, the specific labor time is recommended to consult the doctor, so that the doctor can give rehabilitation training and engage in activities, in order to avoid accidents such as fracture, misalignment and so on.