Patients with lumbar pain after doing sit-ups, mainly because the patient’s lumbar activity is large, so that the lumbar muscle tissue is always in a state of tension and contraction, it is easy to lead to increased pressure in the muscle, fatigue injury of the lumbar muscles, or the occurrence of aseptic inflammation of the deep fascia of the lumbar region, will lead to pain and swelling of the lumbar region, affecting the flexion and extension activities. Fasciitis, localized bursitis, interspinous ligamentitis, or small joint instability of the lumbar spine can cause pain when the patient moves around and stimulates the local lesion. After the patient has lumbar pain, the patient needs to rest in bed to reduce the lumbar to external stimulation, and can be given hot compress treatment, which can relieve the patient’s pain level.