The focus and base of academic evaluation in colleges and universities lie in the evaluation of scientific research achievements and teaching and research personnel, while the evaluation and appointment of professional technical posts are more typical and attractive in teaching and research personnel evaluation. Persisting in talent evaluation system reform for many years, S University has established a comprehensive evaluation system based on quantification and mainly on representative work, which fully demonstrates normativeness, fairness and rationality in practice. The system is based on the 2016 revised "Measures for (Teachers') Professional Technical Post Evaluation and Appointment", which is attached with "Quantitative Measures for Evaluation of Teachers' Posts". Its contents include guiding ideology and evaluation principles, organizational structure, working procedures, qualification and performance appraisal, appointment of special personnel, etc. Its prominent features are open and transparent evaluation process, comprehensive and reasonable quantitative methods, adhering to peer evaluation, rigorous representative work evaluation, classified guidance and evaluation, and sound supporting system. Drawing from S University's experience, in establishing academic evaluation system based on quantification and mainly on representative work, the quantitative evaluation should focus on both scientific research and teaching, both quantity and quality, both ideological and political performance and professional ethics, and should be different from the previous one which mainly focuses on scientific research, achievements quantity and project level. Quantitative evaluation is to reveal the academic level and contribution of teaching and research personnel comprehensively, objectively and accurately, while representative work evaluation mainly measures scientific research level and ability. Selection of external experts is very important in evaluating representative works, and measures should be taken to eliminate interpersonal interference. For academic evaluation of humanities and social sciences, simple quantitative method and simple representative work evaluation both have problems. The comprehensive evaluation system based on quantification and mainly on representative work might be a correct choice to ensure that the academic evaluation is scientific, reasonable, fair and operable.