Numbness in the right leg is mainly caused by nerve compression, a. Consider pear-shaped muscle syndrome. Because after the pear-shaped muscle syndrome, it is easy to lead to edema of the pear-shaped muscle, thus compressing the sciatic nerve, causing numbness, soreness, swelling and pain in the right leg. Second, consider lumbar disc protrusion. After the lumbar disc herniation, the nerve root on the right side is compressed, and the numbness, pain and weakness of the right hip, as well as the right leg, will appear. Third, consider lumbar spine slippage, spinal cord cysts or tumors, easy to compress the spinal cord, the numbness of the lower extremities, this situation appears numbness of the lower extremities is the numbness of both sides of the limbs, that is, by the left leg, the right leg will appear numbness, pain, weakness. So simply appear right leg numbness, mainly consider the pear-shaped muscle syndrome, lumbar disc herniation compression caused.