Lumbar disc herniation(LDH)is a common clinical disease,which can be treated by surgery and conservative treatment.Because of the risks of anesthesia and dural tearing during the course of operation,the conservative treatment should be the first choice in clinic.In order to provide the theoretical evidence for clinical conservative treatment,this article summarizes the mechanism of reabsorption after LDH and the relative clinical research.The mechanism of reabsorption after LDH is closely related to vascularization factor,autoimmunity,inflammatory response,tissue dehydration,apoptosis,etc.; in clinic,the reabsorption degree of intervertebral disc is related to age,gender,disease course,etc.,meanwhile is also related to the following factors:the size and type of protrusion,posterior longitudinal ligament,Modic change,“bull’s eye sign”,etc.; in the treatment,the advantage of conservative treatment should be played to promote the reabsorption of LDH,and the combination of drug and non-drug therapy,and the complementation of modern physical factor and traditional Chinese medicine therapy should be applied.