Low back pain can be briefly categorized into pain caused by the upper lumbar (lumbar 1-3) and lower lumbar (lumbar 4-sacral 1) segments. Causes of pain in the upper lumbar (lumbar 1-3) segments: Involvement of lumbar 1, lumbar 2, lumbar 3 vertebrae or the corresponding discs. Most commonly seen in lumbar paraspinal soft tissue injury, lumbar instability and slippage, lumbar small joint disorder, third lumbar transverse process syndrome, cancer bone metastasis. Generally, in addition to lumbar pain, it also manifests as pain in the affected lower extremity in the anterior and medial thighs as well as the medial calf. In contrast, the lower lumbar (lumbar 4-sacral 1) segments cause a higher incidence of pain, and the most common cause of lower back pain is the involvement of the lumbar 4-5, lumbar 5-sacral 1 discs. A herniated disc compresses the nerve roots causing a range of pain, numbness, lower extremity weakness, and claudication. Other common causes include lumbar spine instability and slippage, lumbar spinal stenosis, lumbar fasciosis, lumbar spine tuberculosis, and lumbar spine cancer bone metastasis. Since a variety of causes can cause low back pain, it is important to be cautious when looking for the cause of low back pain in turn to prevent misdiagnosis and underdiagnosis from occurring, so as not to delay the best time for treatment resulting in chronic pain. In addition, according to the specific parts of the patient’s pain, such as the outer part of the calf, the leg stomach, whether the sole of the foot is involved in the numbness and so on. In addition, the characteristics of pain need to be collected: under what circumstances the pain occurs, whether the pain is aggravated at the beginning of the activity, whether it is aggravated at the end of the activity, etc.. Whether the pain is in the bed position, whether the pain is in the moment of getting up, and so on. In short, don’t be nervous when you have low back pain, the more detailed medical history you provide for your doctor, the more conducive to the formation of a correct diagnosis.