The invention discloses a method for modeling an overload performance evaluation model of a transformer in consideration of multi-factor, comprising the following steps of collecting data based on a scheduling operation and production management information platform; establishing a model based on a multi-factor index; evaluating the performance of the model; utilizing a small value K between a determined maximum load rate K1 and a determined maximum load rate K2, and inputting K as an independent variable into economic loss and economic income formulae in an economic profit and loss model to realize overload performance evaluation of the transformer from the angle of economic profit and loss. The model established by the invention comprehensively considers the multi-factors, which influence the overload performance of the transformer, such as hot-spot temperature limitation, failure rate limitation and economic profit and loss indexes; and compared with an existing overload evaluation model, the constraint conditions are comprehensive. Compared with a traditional heat conduction model, the precision for evaluating the hot-spot temperature aspect of the transformer can be effectively improved in the improved hot-spot temperature model.