Staying up late is not likely to cause back pain, but most of them are engaged in work during late nights, and patients must need to sit for a long time or bend over for a long time to bear weight, which may cause back pain. The body can’t support the frequent late night, will secrete something similar to lactic acid, plus stay up for a long time local lactic acid can’t be metabolized in time, the effect of stimulating the local will cause the appearance of lumbar pain. In addition, if the patient regularly occurs back pain, can not be ruled out due to disease, such as lumbar muscle strain, lumbar disc herniation, low back fasciitis, causing patients to appear back pain symptoms. Patients must pay attention to avoid staying up late for a long time, avoid prolonged sitting and standing, and must pay attention to protecting the lower back.