Pain in the thigh after learning to swim, this is due to the swimming process, the thigh muscles in the root of the strain or excessive tension, and local strain, pain symptoms, you can take the following measures to relieve: First, keep the thigh root position fully relaxed rest, try to choose a flat position as much as possible, but also in the lateral lying position in the middle of the thighs in the soft pillow, keep the lower limbs parallel This can also maintain the relaxation of the muscles. Second, we must pay attention to warmth, not to be cold, because after the formation of local strain, once cold will lead to muscle tissue becomes more tense, venous reflux will also slow down, the accumulation of metabolic products will increase, leading to more obvious pain symptoms. Third, you can apply warm water bags for hot compresses to accelerate blood circulation and promote the absorption of metabolites. Fourth, if the symptoms are very obvious, you can take oral anti-inflammatory and painkillers, such as ibuprofen and nimesulide, to relieve local pain stimulation and reduce pain symptoms.