The present invention relates to an electric mosquito swatter without a battery, comprising a face, a handle, a control circuit board and a mechanical power generating device, wherein the face which is composed of a frame and a web is connected to the handle, the control circuit board and the mechanical power generating device are provided in the handle, the web and the mechanical power generating device are both electrically connected with the control circuit board; the mechanical power generating device comprises a gripping handle, a gear shifting mechanism and a power generator, wherein the gripping handle is provided with a curved rack, which is engaged with the input gear of the gear shifting mechanism, and the output gear of the gear shifting mechanism drives the rotating shaft of the rotor of the generator to rotate, wherein the generator is electrically connected with the control circuit board; the handle is provided with a discharge button switch which is used for shortening the leads of the positive and negative electrodes of the web. In the present utility model, no battery or mains charging is required, , the use costs and the pollution of the used battery are reduced, the overall design is reasonable and reliable, and the use is safe and long-lived; the invention with low costs has a simple assembly, which is ready and easy to use.