The precursors of lumbar disc herniation include lumbago or lower limb pain, occasional numbness of both lower limbs, and decreased muscle tone. 1. Lumbago or lower extremity pain: lumbago or lower extremity pain often occurs after too much walking time and muscle strain. Patients with poor spinal stability and potential lumbar disc herniation will have symptoms of lumbago and lower extremity pain, so unexplained lumbago and lower extremity pain are precursors of lumbar disc herniation. 2. Double lower extremity numbness: double lower extremity numbness, often occurs when the patient walks for too long, or bends down to pick up something, this situation is due to the potential lumbar disc herniation will lead to slight nerve compression, which will cause lower extremity numbness symptoms. 3. weakened muscle tone: the precursor of lumbar disc herniation has weakened muscle tone, due to the lesion of lumbar disc will cause nerve edema, so that the nutritional effect of the nerve on the muscle and control of the role of the insufficient, there may be symptoms of weakened muscle tone, weakened muscle tone is the precursor of lumbar disc herniation. When the precursor of lumbar disc herniation occurs, you should go to the regular hospital for timely treatment and rehabilitation training.