Practicing abs back pain may be caused by a larger amount of exercise, lumbar muscle strain and lumbar disc herniation. 1. Larger exercise: it is recommended to train gradually, if the exercise intensity is too large or the exercise is relatively large, it will lead to the lumbar back compensatory pressure, which will trigger the situation of pain in the lumbar region. 2. Lumbar muscle strain: because the patient has a lumbar muscle strain, practicing abdominal muscles make the waist overloaded or lumbar activities in poor posture, the symptoms of lumbar pain will occur. 3. Lumbar intervertebral disc herniation: the patient’s lumbar vertebrae fibrous ring rupture, nucleus pulposus tissue from the rupture place protrudes in the back or the spinal canal, leading to the adjacent spinal nerve root suffers from the stimulation or compression, so as to produce the phenomenon of abdominal exercises waist pain. Should be scientific exercise, when the patient appeared to practice abdominal muscles waist pain and long-term can not be relieved, it is recommended to go to the hospital in time to check, and give standardized treatment.