The common clinical causes of lumbosacral pain include lumbar muscle strain, ankylosing spondylitis, lumbosacral fasciitis and so on. 1. Lumbar muscle strain: the disease refers to a local chronic aseptic inflammation caused by the accumulation of damage to the lumbar muscles and their attachment points, with clinical manifestations such as vague pain in the lumbar region, pain symptoms aggravated after exertion, and recurring episodes of the disease. 2. Ankylosing spondylitis: this condition refers to a chronic inflammatory disease involving sacroiliac and spinal joints, the main lesions are sacroiliac joints, peripheral joints, spine, etc., mostly seen in young and middle-aged people, with the clinical manifestations of dull lumbosacral pain, morning stiffness and difficulty in turning over. 3. Lumbosacral fasciitis: this condition is a common clinical disease that causes lumbar pain, mostly due to trauma or strenuous activities caused by lumbosacral fascia tears and strains, and its main clinical manifestations are lumbar soreness and pain. The main clinical manifestations are lumbar soreness and pain. The symptoms of pain will be aggravated after activities, and some of the patients also have obvious pressure and pain symptoms. Lumbosacral pain may also have other causes, if the above conditions exist, it is recommended to consult a doctor for a clear diagnosis and treatment.