A millimeter wave module and an electronic device are provided herein. The millimeter wave module includes an antenna substrate and an antenna array. The antenna substrate has a first direction and a second direction perpendicular to each other. The antenna array is located on the antenna substrate. The antenna array includes a plurality of dual-polarized antenna array elements for radiating millimeter wave signal. At least one of the dual-polarized antenna array elements is configured to the radiate millimeter wave signal in a first radiation mode when being fed in the first direction, and radiate the millimeter wave signal in a second radiation mode when being fed in the second direction.