When the patient has low back pain and can't stand up straight, it may be caused by the following reasons: the first reason may be that the patient performs intense twisting exercise without warm-up, or suddenly twists the waist to cause lumbar muscle strain; The second reason may be that the patient has severe lumbar disc herniation due to various conditions; The third possibility is that the patient's waist has severe hyperosteogeny due to various reasons; The fourth reason may be that patients are stimulated by some violent trauma due to various situations, such as waist cuts and impact injuries.