The invention relates to self-generating wireless doorbells. A self-generating wireless doorbell comprises a transmitting module and a receiving module. The transmitting module comprises a shell, a printed circuit board and a generating device. The generating device comprises primary, secondary and a press unit. The primary comprises a primary yoke, a coil and at least one permanent magnet array.The secondary comprises a secondary yoke and secondary teeth. The secondary teeth are flat-plate uniformly toothed interdigital structures composed of a magnetic conductive material. The press unit comprises a spring, a spring holder and a push unit. The spring is mounted in the spring holder. One end of the push unit is a press head. The other end of the push unit is communicated with the secondary yoke. When the press head is pressed, the spring is compressed to push the secondary to move forwards. When the press head is released, the push unit and the secondary retreat, the secondary carries out reciprocating motion on a plane, and a current is generated in the coil through change of a magnetic circuit and magnetic flux. The invention aims at providing the self-generating wireless doorbell without an indoor power supply and a battery.