Step on the stairs sprain, need 1-2 weeks to recover, special cases need a few months to recover, the details are as follows: First, mild sprain: only localized mild swelling, pain and activity limitation, the patient as long as the avoidance of weight-bearing for 1-2 weeks, with the cold treatment, that is, the sprain can be quickly recovered, and will not affect the future of life, work and sports. Second, special circumstances: if a fracture occurs, it can lead to localized swelling, pain and activity limitation is extremely serious, and even need surgery. Therefore, sprains need to wait until the fracture is completely healed before recovery. Fractures usually take 2-3 months to heal and recovery time can be significantly longer. Sprains that occur when stepping on empty stairs should be diagnosed and treated as soon as possible in order to make a good recovery from the injury.