Pain in the lumbar region after swimming, the common causes are as follows: first, swimming is resistance training, requiring complete cooperation between the upper and lower limbs to move the body in the water, if the swimming action is not standardized, not standardized, excessive borrowing of the lumbar region can lead to strain pain in the lumbar muscles, and the sudden twisting of the lumbar region when swimming turns direction can also cause acute muscle damage in the lumbar region, leading to lumbar pain symptoms; Second, before swimming is not sufficiently warmed up, the viscosity between the lumbar muscles is too large, the muscle temperature is too low, the lumbar muscle injury during swimming and the lumbar muscles are attacked by cold water, resulting in lumbar pain symptoms, if the patient suffers from chronic lumbar pain diseases such as lumbar disc herniation and lumbar spinal stenosis, the lumbar pain will be more obvious at this time.