Numbness of the legs when going to the toilet is due to the obstruction of blood circulation in the lower limbs or the compression of the nerves in the lower limbs. After squatting on the toilet for a long time, the blood circulation of the lower limbs decreases, and the nerves are deprived of blood and oxygen, which will lead to numbness. This numbness will be gradually relieved after standing up, generally do not need special treatment. In addition, in addition to nerve ischemia and hypoxia can lead to numbness of the lower extremities, there are many other diseases can also lead to numbness of the legs, such as cervical spondylosis, lumbar intervertebral disc protrusion, lumbar spinal stenosis, pyriformis syndrome and so on. Leg numbness caused by these diseases will usually be accompanied by other symptoms, such as dizziness, headache, sensory disorders, lumbar pain, etc., and it is generally easy to identify. It is recommended that patients should not take too long to go to the toilet and should get up slowly after squatting for a long time to avoid postural hypotension. If the lower limb leg numbness is serious or persists unrelieved, it should go to the hospital in time.