Based on the literature analysis and reference to domestic and foreign measurement tools related to teaching engagement, a questionnaire on the teaching engagement among applied university teachers was developed, which includes three factors: time engagement, behavioral engagement and emotional engagement. A survey was conducted using random sampling among 2 207 teachers across 31 provinces nationwide. The reliability and validity tests of the survey data show that the questionnaire has good internal consistency and structural validity; confirmatory factor analysis validates the theoretical model's structure. To ensure the scientific assessment of teaching engagement at applied universities, the study delineated a practical pathway for the evaluation system, which includes defining evaluation indicators, innovating evaluation methods, scientifically implementing evaluations, dynamizing the evaluation process, and effectively utilizing the results.