We investigated the efficiency of suction curettage used during operative hysteroscopy to facilitate removal of relatively large multiple endometrial polyps (MPs), single endometrial polyps (SPs), and submucous uterine myomas (SMs). Four hundred patients with MPs, 200 with SPs, and 60 with SMs were randomly selected into treatment group 1 (study group), and the same numbers of patients in each category was included in treatment group 2 (control group). In total, 1320 patients were recruited. The operator in group 1 used suction curettage to aid removal of the lesions, whereas the operator in group 2 used the conventional procedure. Operation times in the 2 treatment groups were recorded and compared. Surgical skills were described, and possible surgical complications were monitored. Mean (SD) operation time in patients with MPs, SPs, and SMs in group 1 vs group 2 was 4.5 (1.5) vs 15.0 (7.5) minutes, 5.5 (2.5) vs 12.0 (6.5) minutes, and 17.0 (4.5) vs 26.5 (8.5) minutes, respectively. Difference in operation time between the 2 treatment groups was significant (p<.001). No surgical complications occurred in either group. Suction curettage used to aid removal of relatively large MPs, SPs, and SMs during operative hysteroscopy is efficient, effective, and easy.