The invention provides a PID performance evaluation method, belonging to the field of automation control. The method comprises the step of obtaining the production data and data quality code of a control loop, processing the production data according to the data quality code to obtain a processed production data sequence, combined with a preset process model, obtaining an updated response time, obtaining a performance evaluation parameter corresponding to the control loop, and determining the performance level of the control loop according to the performance evaluation parameter. Through obtaining a variety of data including the measurement value, setting value and operation value of the control loop and constructing the process model for updating the response time in the control loop, the performance of the control loop is evaluated based on the obtained data, at the same time, the iterative updating of an evaluation standard is carried out based on the process model and the combination of a variety of data, compared with the prior art, the possibility of control performance deterioration caused by delayed manual maintenance can be reduced, and the probability of security risks of the control loop is reduced.