According to the statistics of the health insurance database, lower back pain is one of the most common diseases in the musculoskeletal system, with an annual prevalence rate of 15%-45%. Nearly 80% of people have suffered from lower back pain in their lifetime. A 27-year-old female patient walked into the clinic with a slight limp and complained the pain in the left waist. In the past year, her waist and groin were obviously painful when she had to stand up after sitting for a long time. She had no history of trauma. It is more comfortable for her to sleep on her side and arch her feet up. On May 13th 2021, the patient came to our clinic and was diagnosed with iliopsoas muscle tension through the "quadrant pain detection method". After acupuncture, cupping, and rehabilitation exercises to strengthen abdominal muscle strength, the patient was healed in three months.