The invention discloses a non-invasive electrical load monitoring and load decomposing device which comprises a load monitoring unit, a data processing unit and a terminal display unit, wherein the load monitoring unit is used for acquiring first electric load parameters on a first electric power circuit; the data processing unit is used for generating first load information on the first electric power circuit according to N electrical load parameters acquired from N electric power circuits except the first electric power circuit and the first electrical load parameters; N is an integer larger than or equal to 1; the first load information at least comprises comparison information between the first electrical load parameters and at least one of the N electrical load parameters; the terminal display unit is used for displaying the first load information. The non-invasive electrical load monitoring and load decomposing device solves the technical problem that in the prior art, load information only aims at monitored electric power circuits, so that content is relatively single, enables a user to know information of other electric power circuits horizontally while knowing the first load information of the first electric power circuit, and is convenient for the user to compare.