After the foot sprain, the time of running exercise is closely related to the degree of local injury. If it is only a minor local sprain, generally rest for a week or so after the pain completely disappears, you can run normally. If the local ligament and muscle damage is more serious, it takes at least 3-4 weeks before you can run. If it is accompanied by a fracture, at least 3 months of rest is needed to determine whether it is possible to run according to the healing of the fracture. If the local swelling is obvious after the foot sprain, it is necessary to improve the X-ray examination in time to exclude the problem of fracture. For general soft tissue injuries, you can spray local aerosol for swelling and pain, and pay attention to more rest to help recovery.