There are many clinical conditions that can cause a patient to have sudden leg pain that prevents them from walking. The most common is a patient with lumbar disc herniation, which is caused by an acute attack of external stimulation, resulting in a prolapsed nucleus pulposus and severe irritation and compression of the nerve roots. In the treatment, conservative treatment can be considered first by instructing the patient to stop walking, rest in bed, and give brace fixation or traction to the lumbar spine. Chinese herbal fumigation, acupuncture, moxibustion, and small acupuncture can also be applied to the lumbar region to relieve the muscle tension in the lumbar region and reduce the irritation to the nerve roots, which can help to relieve clinical symptoms.