Based on the analysis of diversified assessment modes at home and abroad, diversified, process-oriented and capability-oriented assessment method reform strategies for indoor air environment course for HVAC postgraduate course were put forward, to guide students to study in depth and improve learning effectiveness. The diversified evaluation model, that is, "examination + course paper + report defense" based on progress management was given and applied in teaching practice. The progress management and achievements in course paper writing progress, such as title selecting, outline writing, manuscript writing, and report defense, were focused on. The diversified, process-oriented and innovative assessment method could be a reference for the reform of other curriculums.