The leg numbness that occurs after sleeping is particularly common in daily life, and the reasons for its appearance are more than one, and can be divided into the following points: 1, due to the incorrect posture of sleep at night, the legs are compressed for a long time, the local blood circulation is not good, and induce patients to appear leg numbness. This cause of leg numbness, get up and move for a while can be relieved. 2, may be due to lumbar spine problems and induced to appear, such as lumbar muscle strain or due to lumbar disc herniation compressed to the nerves in the legs, and induced patients appear leg numbness. 3, may be due to diabetes, inflammation of the surrounding blood vessels and lead to patients appear leg numbness. When leg numbness occurs, it is best for the patient to go to the hospital to find out exactly what causes it and then give targeted treatment.