Sitting for a long time, if the symptoms of leg numbness, there are several situations: 1, sitting for a long time, blood circulation is affected, nerve compression, lower limbs have a transient dysfunction, feel a little numb, generally do not need to do special treatment, stand up and move around to relieve. 2, if sitting for a long time, the symptoms of numbness through the activities do not see relief, lumbar disc protrusion compression nerve symptoms of lower limb numbness. The possibility is greater, you need to go to the hospital to do a systematic examination, including the doctor’s examination, imaging examination. If the diagnosis of lumbar disc herniation is confirmed, conservative treatment may be required initially. If conservative treatment is not effective, further invasive treatment will be taken to see if the symptoms can be relieved.