Lower back pain after staying up late may be related to the coldness of the lower back muscles, lumbar muscle strain as well as aggravation of the symptoms of herniated discs and kidney disease. At night, the temperature drops, if you do not pay attention to keep warm, the waist is cold, cold stimulation of the muscles will appear pain symptoms. If you sit or stand for a long time while staying up late, your lumbar muscles will gradually become strained, causing soreness and pain in the muscles. If there is a history of lumbar disc herniation, spinal stenosis, the burden of sedentary lumbar spine increases when staying up late, it will aggravate the stimulation of the spinal cord nerve roots, lumbar pain symptoms. Renal diseases such as chronic pyelonephritis, perirenal abscess and other renal diseases, after staying up all night will also appear back pain symptoms, the general examination of the renal region percussion pain is obvious. If the low back pain after staying up late continues to be unrelieved, it is recommended to go to the hospital for medical examination to clarify the cause of the disease and then carry out regular treatment.