In order to study ami-inflammatory and analgesic effect of YAO TUI TONG JIAO NANG(YTTJ,a TCM capsule to treat lumbocru-ral pain)on experimental rats with chemical radicular neuritis(CRN),96 wistar rats of CRN duplicated by operation to simulate lumbar interverte-bral disc protrusion were divided into 4 groups:group A(normal),group B(model without treatment),group C(model treated with Aspirin)and group D(model treated by YTTJ).The level of mediators of inflammation,the granuloma mass caused by stimulus was d...