Postmenstrual lumbar pain can be relieved by the following methods: First, bed rest, reduce lumbar weight-bearing, avoid excessive stooping activities, reduce adverse stimuli. Second, lumbar hot compresses, microwave therapy, ultrashort wave therapy and far infrared therapy, 1-2 times a day, 30 minutes each time, to promote the local muscle tissue and ligament inflammation subside, can relieve the symptoms of lumbar pain. Third, lumbar massage and tuina, once a day, 30 minutes each time, can relax the muscles of the low back, relieve muscle tension and stiffness, and reduce the symptoms of low back pain. Fourth, lumbar traction, once a day, 30 minutes each time, can reduce the pressure of lumbar intervertebral discs and small joints of the lumbar vertebrae, relieve lumbar muscle tension, and alleviate pain symptoms. The patient is still in the breastfeeding state at this time, should be physical therapy, try to avoid drug treatment.