Soreness after swimming may be caused by lactic acid accumulation or wind and cold, which can be relieved by rest, massage and physiotherapy, medication and other methods. 1. Lactic acid buildup: It is a common cause that the muscles are over-exercised for anaerobic consumption, and lactic acid buildup leads to body ache. It is recommended to rest more, reduce limb joint activities, while more hot bath, drink more water, with massage therapy can promote lactic acid metabolism, accelerate the relief of the above symptoms of pain. 2. Wind and cold: you can take antipyretic and analgesic drugs (such as aspirin, indomethacin, etc.), in addition to localized hot compresses can also help treatment, which can play a role in promoting blood circulation, muscle soreness and muscle pain have a certain effect of alleviation, but also can play a role in keeping warm. Soreness after swimming is not a serious condition, but if the conventional measures are ineffective or the pain continues to aggravate, it is recommended to consult a doctor in time to avoid delaying the condition.