The invention relates to the technical field of the smart electric meter, to a single-phase smart electric meter with a wireless meter reading function. The single-phase smart electric meter comprises an electric power signal sampling module, a single-phase three-wire metering unit, and a micro controller, wherein the electric power signal sampling module, the single-phase three-wire metering unit, and the micro controller are successively connected; and the micro controller calculates the positive electric energy E1, reverse electric energy E2, and net electric energy E. In addition, the single-phase smart electric meter also includes an LCD display module, a power module, an RTC and backup battery module, a pulse output module, a positive electric energy storage unit, a reverse electric energy storage unit, a net electric energy storage and a wireless communication module, wherein the LCD display module, the power module, the RTC and backup battery module, the pulse output module, the positive electric energy storage unit, the reverse electric energy storage unit, the net electric energy storage and the wireless communication module are connected with the micro controller. The wireless communication module is linked to a remote meter reading device by a wireless communication channel, thereby realizing remote meter reading. According to the invention, respective accumulation, metering, and storage of the positive and reverse time-sharing electric energy as well as functions of real-time measurement, load recording, and remote meter reading and the like can be realized. And problems that the existing electric meter can not carry out bidirectional power supply energy settlement, remote meter reading, and electric energy quality monitoring can be solved.