The invention discloses a condenser heat transfer performance evaluation method based on statistical analysis of operation data, and belongs to the technical field of thermal power generation. Comprehensive and accurate evaluation is hard to realize using the evaluation method in the prior art. If a condenser is detected and evaluated using detection equipment, there is a need to increase cost investment on one hand, and on the other hand, real-time evaluation is hard to realize. A standard data fitting model and a contrast data fitting model are built using a statistical analysis method according to unit load, circulating pump operation combination, low-pressure cylinder exhaust steam temperature, circulating water outlet temperature and circulating water inlet temperature data to get the comprehensive heat transfer performance condition of a condenser, and the amplitude of variation in heat transfer performance of the condenser is obtained through difference comparison of the two models. Through the method, the heat transfer performance of a condenser can be evaluated comprehensively, the performance of a condenser can be monitored in real time, and the cost and investment are low.