Background:Characterized by the presence of endometrium outside the uterine cavity,endometriosis is a benign gynecological disease,it has certain malignant biological behaviors such as proliferation,adhesion,invasion and metastasis.The progression of endometriosis is often associated with the implantation,dissemination,invasion,and local cytokine production and secretion of pelvic endometrial cells.Hyaluronan acid(HA)is an important tissue component in the extracellular matrix and is mainly synthesized by h...