The research aims to construct an evaluation index system for the training effectiveness of national vocational qualification rock climbing junior instructors through Delphi method, questionnaire survey, mathematical statistics, and expert opinion consultation. The system is based on the Kirkpatrick evaluation model and covers the training preparation, learning, and application period to improve the accuracy of evaluation. By objectively and comprehensively evaluating the training effectiveness of rock climbing instructors, problems and deficiencies in the training process can be identified in a timely manner, so as to improve the training content and methods in a targeted manner and enhance the quality of training. The research successfully established a system consisting of 3 primary indicators (training background, process, and outcome evaluation), 7 secondary indicators, and 17 tertiary indicators, which have been verified to have a positive effect on training effectiveness evaluation. Further use Delphi method and Analytic Hierarchy Process to determine the weight of indicators, establish a comprehensive evaluation model, and divide the training effect into three levels of development potential: high, medium, and low. Empirical research shows that the comprehensive score of the training effect for junior rock climbing instructors in Southwest China in 2023 is S=4.8316, which belongs to a high development potential area and indicates significant training effectiveness. At the same time, the research analyzed the training issues and proposed improvement measures. In summary, the indicator system constructed in this study has high application value for rock climbing training and development, providing strong support for future training work.