The hip is connected to the whole leg, which is the normal direction of the sciatic nerve. The symptoms that produce numbness indicate that there is compression of the sciatic nerve, resulting in sciatica. There are two common causes: one is pear-shaped muscle syndrome, and the other is lumbar disc herniation. You should go to the orthopedic department of the hospital for a physical examination or CT examination of the lumbar disc to determine the specific lesion. You should try to rest in bed, sleep on a hard bed, avoid bending and sitting for a long time, with acupuncture, massage, physical therapy, oral methylcobalamin nerve nutrition and other symptomatic treatment. If the lumbar disc herniation is particularly serious in terms of nerve compression, minimally invasive intervertebral foraminal surgery or open surgery can be done to treat it, while conservative treatment can be done when the lesion is not serious.