Abstract: Objective To investigate the efficacy of hysteroscopic treatment of uterine diverticulum, and to analyze the factors influencing its efficacy using logistic regression analysis.  
Methods Eighty patients with uterine diverticulum were selected and given hysteroscopic treatment, and the therapeutic effects were recorded. The patients were divided into non-disappearance of uterine diverticulum group (non-disappearance group, n=24) and disappearance of uterine diverticulum group (disappearance group, n=56) according to the therapeutic effects. The influencing factors related to the efficacy of hysteroscopic treatment of uterine diverticulum were analyzed by multivariate logistic regression, and the receiver operating characteristic (ROC) curve was used to analyze the influencing factors and the constructed logistic regression equation was used to predict the value of efficacy. 
Results Eighty patients with uterine diverticulum received hysteroscopic surgery successfully without complications such as infection and organ bleeding. 70.00% (56/80) patients had disappearance of uterine diverticulum after surgery, 30.00% (24/80) patients had uterine diverticulum that still existed but were significantly smaller than that before surgery, and all patients shortened their menstrual period to different degrees. The number of cesarean section was higher in the non-disappearance group than in the disappearance group, the depth of uterinediverticulum was higher than that in the disappearance group, and the thickness of residual myometrium was lower than that in the disappearance group (P＜0.05). The number of cesarean section and the depth of uterine diverticulum were the risk factors related to efficacy, and the thickness of residual myometrium was the protective factor related to efficacy (P＜0.05). Logit (P)=-5.296 + 3.129×number of cesarean section +2.857×depth of diverticulum -0.920 thickness of residual myometrium.Compared with each related factor alone, the constructed logistic regression equation had the largest area under the ROC curve (AUC) for predicting efficacy. 
Conclusion Hysteroscopic surgery can promote the disappearance of uterine diverticulum and improve patients' clinical symptoms. Its postoperative efficacy is influenced by the number of cesarean sections, the depth of the diverticulum, and the thickness of residual myometrium. Therefore, the preoperative assessment of these three factors can provide objective quantitative reference for the choice of clinical surgical modality, which can ensure the maximum therapeutic effect while avoiding overtreatment. 

Key words: hysteroscopy, diverticulum, treatment outcome, influencing factor analysis