The present disclosure provides multimedia broadcast monitoring method and system, and an electronic device. The method includes generating a first verification image of a play plan according to a pre-generated first identification image and configuration information of a display terminal, the first identification image being configured to represent first identity authentication information configured to represent the play plan; generating to-be-displayed data according to the play plan, a multimedia file corresponding to the play plan, and the first verification image, so that the display terminal performs display in response to the to-be displayed data; receiving and analyzing a display image sent by the display terminal, and after a second identification image is derived from the display image, acquiring second identity authentication information; and comparing the second identity authentication information with the first identity authentication information, and determining whether the display image is correct according to a comparison result.