Objectives: To study the effects of Longdan Yaobi'ning Pellets on blood cells and serum cytokine expressions of TNF-α, IL-1β and β-NGF in Lumbar intervertebral disc herniation rats. Methods: A rat model of lumbar intervertebral disc herniation was established by transplanting autologous nucleus pulposus. The rats were randomly classified into following 8 groups: blank group, sham group, model group, Longdanyaobining Pellets (low dose) group, Longdanyaobining Pellets (medium dose) group, Longdanyaobining Pellets (high dose) group, TCM control...