Sudden lumbar pain may be the following: 1, when maintaining a posture for a long time or engaging in excessive physical labor, lumbar pain is a very common phenomenon, at this time should be local massage or hot compresses to relieve local pain, and change the posture to reduce the pressure on the lumbar spine. This cause of low back pain can be recovered in a short time.2. When the patient suffers from lumbar strain or other diseases, the phenomenon of pain in the lower back occurs, and the pain of other pathologies can also radiate to the lower back. Patients need to go to the hospital for examination in time, and CT examination can be done.3. Patients with incorrect sleeping posture, or excessive physical labor during the day, without good rest in the waist will also appear sudden pain. At this time, the patient should correct the bad sleeping posture, reasonable rest, do not worry too much, will not appear serious disease.