The most common causes of lumbar soreness are over-exercise, soft tissue injuries, lumbar disc herniation, osteoporosis, etc. If the symptoms persist, it is recommended to seek medical treatment in time. 1. Excessive exercise: If patients engage in strenuous activities, such as long-distance running, playing soccer and other sports, which cause lactic acid to accumulate in the lumbar muscles, the feeling of lumbar soreness will occur. 2. Soft tissue injury: if the patient’s waist is traumatized, muscle, ligament damage or fracture, it will cause the patient’s waist pain and soreness, and the symptoms are serious, and there will be activity limitation. 3. Herniated lumbar intervertebral discs: when the herniated lumbar intervertebral discs press on the nerves, it will cause lumbar pain and numbness, and the patient may also experience pain and numbness in the lower limbs. 4. Osteoporosis: mild osteoporosis has no obvious symptoms, when osteoporosis is severe, patients may experience pain in the lower back. Causes of lumbar soreness and swelling of more reasons, may also be related to urinary stones, tumors and other reasons, it is recommended to go to the hospital in a timely manner by the doctor to identify the cause of the disease, targeted treatment.