Objective: To compare the clinical effects of conventional hysteroscopy and HEOS hysteroscopy in the treatment of refractory intrauterine residuals. Methods: From January 2017 to February 2019, 60 patients with refractory intrauterine pregnancy residuals admitted to the Integrated Traditional Chinese and Western Medicine Hospital of Wenzhou were randomly selected.The patients were divided into traditional endoscopy group and HEOS system endoscope group according to the different operation method, with 30 cases in each group.The operation time, intraoperative blood loss, hospitalization cost, postoperative uterine adhesion rate, postoperative menstrual recovery time, postoperative recovery rate of endometrium at the first, second and third month after operation were compared between the two groups. Results: The operation time of the conventional laparoscopic group was (24.38±3.16)min, which was longer than that of the HEOS system hysteroscopy group[(18.71±3.32)min](t=1.336, P=0.027). The intraoperative blood loss of the conventional laparoscopic group was (18.41±4.35)mL, which was higher than that of the HEOS system hysteroscopy group[(12.81±3.84)mL](t=1.853, P=0.031). The hospitalization cost of the conventional laparoscopic group was (7 461.87±344.92)CNY, which was more than that of the HEOS system hysteroscopy group[(6 743.19±298.52)CNY](t=0.037, P=0.040). In addition, the uterine adhesion rate in the traditional hysteroscopic group was 20.00%(6/30), which was higher than that in the HEOS system hysteroscopy group[6.67%(2/30)](χ²=2.308, P=0.029), and the postoperative menstrual recovery time in the traditional hysteroscopic group was (31.46±4.12)d, which was longer than that in the HEOS system hysteroscopy group[(26.18±3.72)d](t=1.730, P=0.026). At the first, second and third month after operation, the good endometrial recovery rates in the traditional laparoscopic group were 20.00%(6/30), 43.33%(13/30), 63.33%(19/30), respectively, which were lower than those in the HEOS system hysteroscopy group[46.67%(14/30), 70.00%(21/30), 93.33%(28/30)](χ²=4.800, 4.344, 7.954, P=0.028, 0.037, 0.005). Conclusion HEOS system endoscope in the treatment of refractory intrauterine residual has good effect and is worthy of promoting.