Easy leg numbness may be caused by physiological factors such as keeping the legs in the same position for a long time and long-term compression. It may also be caused by osteoporosis, lumbar intervertebral disc herniation, or other diseases such as arteriosclerosis occlusive disease of the lower limbs. 1. Physiological factors: If the legs remain in the same position for a long time, long-term compression, warmth measures are not in place, may have an impact on blood circulation in the legs, resulting in numbness in the legs, which is a normal physiological phenomenon. You can massage and apply hot compresses on your legs to relieve the numbness. 2. Osteoporosis: lack of calcium and vitamin D in the body may induce osteoporosis, making the patient prone to numbness in the legs, but also prone to leg pain, shortening of body length, easy to bone and other symptoms. 3. Lumbar intervertebral disc herniation: Lumbar trauma stimulation, lumbosacral congenital abnormalities and other reasons may induce lumbar intervertebral disc herniation. When the lesion causes pressure on the nerves of the lower limbs, symptoms such as leg numbness and leg pain may occur. 4. Other diseases: lower limb arteriosclerosis occlusive disease, diabetic peripheral neuropathy, cerebral infarction and other diseases may also lead to leg numbness. After excluding physiological factors, it is recommended to go to the hospital for relevant examinations to clarify the cause and standardize the treatment.