Objective To analyze the feasibility analysis of full-stack pelvic floor ultrasound (FSPFU) technique instead of manual measurement for the minimum levator hiatus (LH) plane in postpartum women. Methods A total of 210 women undergoing pelvic floor ultrasound examination in Wanning People"s Hospital were enrolled as the research objects between June 2020 and June 2022, including 52 cases, 98 cases and 60 cases with vesicocele at degrees 0-I, II and III, respectively. All underwent transperineal pelvic floor ultrasonography. The three-dimensional volume data graphs were manually adjusted by two junior doctors (group A) and two senior doctors (group B) to obtain and measure the minimum LH plane. And the minimum LH plane was obtained and measured by one junior doctor (group C) with FSPFU software. The measurement time and results of the minimum LH in groups A, B and C were compared, and the coincidence rate of the minimum LH profile was calculated. Results The measurement time of the minimum LH was the shortest in group C, followed by group B and group A (P<0.05). There was no significant difference in the minimum LH area under Valsalva state by the three methods (P>0.05). Consistency analysis showed that ICC values of the minimum LH area measured by three methods were all > 0.85 (P<0.001). Correlation analysis showed that the r values of minimum LH area measured by three methods were all > 0.70 (P<0.05). For different degrees of cystocele, the coincidence rates of the minimum LH profile by the three methods were all >0.920. The coincidence rate of the minimum LH profile in group C was higher than that in groups A and B (P<0.05). Conclusion Compared with manual measurement, FSPFU has higher efficiency in measuring the minimum LH plane, which can shorten spending time of pelvic floor ultrasonography and can be instead of manual measurement for the minimum LH plane.