The invention relates to a bus load identification method and system. The method comprises the steps of collecting load identification data of a to-be-identified bus; determining load power time sequence data corresponding to various electrical loads on the to-be-identified bus according to the load identification data of the to-be-identified bus. According to the technical scheme provided by theinvention, the identification of the load types of large-scale and diversified loads on the bus is realized through the learning capability of the LSTM neural network, and the identification precisionis improved.