The main clinical symptoms of lumbar disc herniation are nerve damage, involving the lumbosacral plexus, involving the femoral nerve, the foramen ovale nerve, and the sciatic nerve, and the resulting symptoms are motor and sensory impairment in the above innervated areas. The femoral nerve comes from the lumbar 2-4 spinal nerve, which is the thickest of all the branches of the lumbar plexus, and walks in the iliac recess between the psoas major muscle and the iliopsoas muscle, and sends out muscle branches to the psoas major and iliopsoas muscles, and immediately divides into three branches after passing through the inguinal ligament to the thigh, and innervates the muscles and skin of its distribution area. When the lumbar 3-4 disc is herniated, the femoral nerve can be damaged, showing pain and discomfort or abnormal sensation in the groin and front of the thigh. 2, closed hole nerve from the lumbar 2-4 spinal nerve, from the lumbar muscle out that descends into the small pelvis, through the closed hole endothelial canal out of the pelvis, divided into two terminal branches: (1) anterior branch: from the closed hole before the external muscle out of the pelvis in the pubococcygeus muscle, after the long retractor muscle and before the short retractor muscle, the terminal for the skin branch, distributed in the skin of the inner side of the thigh, sometimes over the knee to the inner calf. (2) Posterior branch: It runs between the short retractor muscle and the large retractor muscle. The innervation of the external foramen ovale, pubococcygeus, adductor and femoris muscles, and the distribution to the hip joint. When the herniated disc infringes on the foraminal nerve, it can manifest as pain or numbness in the deep hip area. 3. The sciatic nerve comes from the lumbar 4-5 nerve roots and the sacral 1-3 nerve roots. It is the thickest of all nerves. The sciatic nerve exits the pelvis to the buttocks through the inferior foramen of the pear-shaped muscle, travels downward in the deep side of the gluteus maximus muscle, crosses the closed inner muscle, the upper and lower I muscle and the posterior aspect of the femoral square muscle in turn, innervates these muscles, and descends along the back of the great retractor muscle, between the semitendinosus muscle, semimembranosus muscle and biceps femoris muscle, sending out muscle branches to the flexors of the thigh on the way. The sciatic nerve is divided into the tibial and common peroneal nerves before reaching the N fossa, which innervates all the muscles of the calf and foot and the skin sensation of the calf and foot except for the saphenous innervation area. 4, sciatica is the main symptom of lumbar disc herniation, the sciatic nerve is actually composed of the common peroneal nerve and the tibial nerve, these two nerves from the beginning to the N fossa above the total sheath of connective tissue will be wrapped in, but the fibers of the two nerves are not cross-connected together, the sciatic nerve most of the pelvis to the buttocks through the inferior foramen of the pear-shaped muscle. It then descends vertically between the greater trochanter and the sciatic tuberosity to the posterior femur. Variations of the sciatic nerve in the pelvis and buttocks are present in approximately 40% of the population. As the sciatic nerve or other parts of it crosses the pear muscle, the pain is affected by muscle contraction and compression and is called pear muscle syndrome.