Objective To develop a training system for newly recruited nurses and evaluate its application effects. Methods The new nurse training system was developed through three major steps：system construction analysis，system design，and system development. A historical control design was adopted，with 421 newly recruited nurses in a tertiary grade A general hospital in Sichuan Province in 2020 as the control group and 347 newly recruited nurses in 2021 as the experimental group. Nurses in control group received training based on Enterprise WeChat，while nurses in the experimental group received training through the newly developed nurse training system. In August 2022，a system satisfaction survey was conducted among the 2021 newly recruited nurses，their mentors，and teaching administrators involved in the training to assess their satisfaction with the system. The specific competency levels of the 2020 and 2021 newly recruited nurses were measured using the Nurse-Specific Competency Scale at the beginning of the training and at the 6th，12th，18th，and 24th months of training. Results The new nurse training system comprises two primary modules（management and training），eight secondary modules，and tertiary modules under the secondary modules. The satisfaction score of newly recruited nurses with the system was（92.07±13.69） points，and the satisfaction score of their mentors and teaching administrators was（91.46±15.93） points. Repeated measures ANOVA revealed statistically significant interaction effects between time and group in terms of the specific competency scores of newly recruited nurses at the beginning，as well as the 6th，12th，18th，and 24th months of training（P<0.05）. The specific competency scores of the experimental group were higher than those of the control group at the 12th，18th，and 24th months of training（P<0.05）. Conclusion The newly recruited nurses，their mentors，and teaching administrators expressed high degree of satisfaction with the system. The application of this system contributes to enhancing the specific competency of newly recruited nurses and can provide a reference for the informatization construction of new nurse training and management.