The invention relates to the field of industrial and civil reflecting mirrors, in particular to a film photovoltaics-based generation reflecting mirror. The film photovoltaics-based generation reflecting mirror comprises a glass substrate, a film photovoltaic layer and a reflecting layer which are sequentially superposed. Compared with the prior art, when the reflecting mirror is applied in a tower-type solar power generation system, the reflecting mirror provided by the invention absorbs sunlight through the film photovoltaic layer in a mirror surface structure, then the light energy is converted into electric energy, the electric energy is delivered to a transmission system through a power line, so the transmission system drives the reflecting mirror to follow the sun, the normal operation of the whole transmission system is maintained without an external power supply to supply power for the transmission system, so energy can be saved.