The purpose of this study is to use the planned behavior theory model to explore the intention of students with intellectual disabilities in vocational schools to engage in leisure activities. This study focuses on the influence of the specificity of the mental disabilities of students with intellectual disabilities in vocational schools on leisure sports, and explores the interference effects on behavioral intentions with high and low levels of participation in sports. This research adopts a cluster sampling method for five vocational schools of intellectual disabilities students . There are a total of 300 valid samples. Questionnaire data ASEM19.0 SEM structure equation test, the study found that: Higher vocational students with mild mental disabilities behavioral intentions do not have a positive impact on the attitude. High subjective norms and perceptual behavior control have a positive impact on behavioral intentions, of which, perceived behavioral control has the highest performance. There is a positive correlation between behavioral attitude, subjective norms, and perceptual behavior control. This study further analyzed that high and low levels of participation in the exercise group interfered with the relationship between subjective norms and perceived behavioral control and behavioral intentions. Finally, relevant recommendations are made for the results of this study to serve as a policy reference for future students to participate in leisure sports.