Exercise will often appear edema phenomenon, common may be due to excessive exercise intensity or sports injuries, according to the symptoms of adjusting the amount of exercise or timely medical care. 1. Exercise intensity is too large: exercise intensity is too large when the muscle anaerobic respiration will be enhanced, resulting in a large amount of lactic acid and metabolic waste in the body, these metabolic wastes are not cleared in a timely manner after the exercise will be stagnant in the lower limbs, resulting in limb edema. 2. Sports injuries: sometimes sports injuries are not easy to be found, but sometimes there will be soft tissue injuries after exercise, soft tissue injuries will gather a large amount of tissue fluid locally, showing edema in the affected area. Exercise intensity is too high or sports injuries can lead to post-exercise edema, it is recommended to adjust the amount of exercise according to the symptoms or consult a doctor in time.