This study aims at exploring educational improvements for rotational industry-school research liaison of vocational high schools, and proposes concrete suggestions according to the research conclusions. These suggestions can be referential for the educational improvements for the rotational industry-school research liaison of vocational high schools. This research mainly employs ”questionnaire survey method,” takes the ”executive staff and teachers” of the rotational industry-school research liaison class of the Division of Commercial Hotel and Restaurant Management of S High School of Home Economics and Commerce, the ”parents of students” and the ”supervisors of enterprises” as the research targets of the questionnaire survey. Totally there were 500 questionnaires sent out and 427 questionnaires returned, with a return rate of 85%. The data analysis adopts some statistical methods, including One-Way ANOVA, and regression analysis. The major findings of this study are: 1. the foundational vocational training provided by school is helpful to the working and learning of students. 2. The supplementary training arranged by school is helpful to the career learning of students. 3. The spirit of respects to work of the administrative staff in various professions has exemplifying functions. 4. Employers incline to prioritize the employment of graduates having participated in career learning.