Passive wireless mouse

The utility model discloses a passive wireless mouse, which belongs to the field of computers. The passive wireless mouse disclosed by the utility model aims to solve the problem that for the traditional wireless mouse, a mouse pad needs to be externally connected to a power supply. The passive wireless mouse comprises a USB (universal serial bus) emission source, the mouse pad and a mouse, wherein the USB emission source comprises a USB plug, a filtering circuit, an oscillator, a MOSFET (metal-oxide-semiconductor field effect transistor) driving circuit, a first NMOS (N-channel metal oxide semiconductor) switching tube, a second NMOS switching tube, an LC oscillating circuit and an emission coil; the USB emission source is used for converting a direct current power supply into alternating current of which the frequency is f; an alternating magnetic field is stimulated in the emission coil; the LC oscillating circuit in the mouse pad and the alternating magnetic field generate resonance; an induced magnetic f