Cang Er Zi is toxic, Cang Er Zi foot soak can not eliminate lumbar disc herniation, it is recommended that patients with lumbar disc herniation seek medical attention in time. Cang Er Zi, has the efficacy of dispersing wind-cold, through the nose, dispelling wind-dampness, and relieving pain. The main treatment of wind-cold cold, nasal abyss (mainly manifested as nasal mucus obscene, the amount of wipe not clean), rheumatism paralysis, rubella itching, scabies leprosy. Cang Er Zi on lumbar intervertebral disc herniation identified in Chinese medicine as rheumatism paralysis has a certain effect of relief, and often need to be used with other drugs together. Blood deficiency headache should not take Cang Er Zi. Overdose of Cang Er Zi can lead to poisoning. Adverse reactions: dizziness and headache, general malaise, nausea, vomiting coffee-colored substances, mild abdominal distension, with diarrhea or constipation. Patients with lumbar disc herniation need to go to a regular medical institution for treatment, and individuals should not blindly use medication on their own to avoid adverse reactions.