The feeling of special soreness in the lower back when waking up from sleep includes the following aspects, 1. It may be caused by lumbar muscle strain or soreness in the lumbar muscles during the day or during working hours, which is caused by a high level of activity, and this condition is aggravated by soreness in the lower back when waking up after resting, mainly due to the excessive accumulation of lactic acid, which causes acidic stimulation. 2. It may also be caused by incorrect sleeping posture, resulting in 3, other diseases, such as common lumbar muscle strain, lumbar disc protrusion and lumbar spine osteophytes, lumbar spine ligament inflammation in old age, these diseases may appear corresponding soreness symptoms under incorrect sleeping posture, or induced by cold factors. Therefore, when the symptoms of back pain occur after waking up, you need to go to the hospital for detailed examination to find the exact cause of the disease and carry out systematic and standardized treatment according to the cause.