Objective To develop a fetal heart monitoring learning platform based on WeChat mini program and verify its application effect among undergraduate nursing students.Methods A mobile fetal heart monitoring learning platform adapted to WeChat applet was developed，with a user port consisting of five modules：basic knowledge module of fetal heart monitoring，fetal heart monitoring map library module，renowned teachers lecture module，interactive Q&A module，game challenge module. Twenty-three undergraduate students（hereinafter referred to as “students”） from the nursing school of a comprehensive university in Chengdu City，Sichuan Province，in the class of 2019 in the direction of nursing midwifery，were selected as the study subjects. The research team collected the duration and frequency of students’ use of the platform for learning，and compared and analyzed students’ knowledge tests related to fetal heart monitoring before and after using the platform，and investigated their satisfaction with the platform.Results Twenty-one students used the fetal heart monitoring teaching platform 1-3 times per week，and 18 students used the fetal heart monitoring teaching platform for less than 30 minutes per week. The test scores of students on fetal monitoring-related knowledge after using the platform for assisted learning were higher than those before using the platform（P<0.05），and students showed high satisfaction with the platform.Conclusion The use of the platform can improve the teaching effect of fetal monitoring to a certain extent，enrich the teaching methods of fetal monitoring，and supplement the teaching content of fetal monitoring.