Swimming exercise for patients with lumbar muscle strain injury may have a certain auxiliary effect on the relief of lumbar muscle strain injury symptoms and disease treatment. 1. The water has buoyancy and resistance, the human body is horizontal when swimming, the spinal axial compressive stress is very small, due to the role of relaxation of spinal muscles during swimming, the intervertebral disc space increased, lumbar muscle strain injury play a certain role in relieving. 2. Due to the hip flexion, knee flexion and hip extension and knee extension joint movement has driven the spine forward flexion and backward extension effect, repeated, strengthen the lumbar muscle strength, so that the lumbar resistance to injury factor increases thus improving the strength of the lumbar region, to prevent the recurrence of lumbar strain injury. But should pay attention to the exercise intensity, not excessive swimming, so as not to cause secondary injury, at the same time, after swimming should pay attention to warmth, do not let the waist and back cold, otherwise it will aggravate the condition.