Objective To observe clinical effects of Shentong Zhuyu Decoction on severe lumbar intervertebral disc protrusion.Methods Before and after treatment (orally taking Shentong Zhuyu Decoction for two treatment courses),the total effective rate was evaluated according to the changes of pain scores and straight leg raising angle by comparing with themselves on 60 patients with severe lumbar intervertebral disc protrusion.Results After treatment,significantly pain was reduced and straight leg raising angle was improved; the differences had statisti...