The invention relates to an electric energy meter with WIFI communication function. The electric energy meter communicates with an upper computer in a WIFI wireless communication way so as to achieve remote meter reading. The hardware of the electric energy meter comprises an ARM central processor unit which is connected with a FLASH chip by an NAND Flash controller, is connected with two SDRAM by a memory controller, is connected with a WIFI wireless network card by interfaces, is connected with a liquid crystal display and a relay by GPIO, and is connected with the output terminal of an electric energy measuring chip by an SPI; the hardware of the electric energy meter also comprises a voltage mutual inductor and a current mutual inductor, the input terminals of which are respectively connected with an external power network, the electric energy measuring chip which is connected with the output terminals of the voltage mutual inductor and the current mutual inductor by a differential voltage/current input pin and connected with the ARM central processing unit by the SPI, a power chip which provides 5V and 3.3V power output, a relay, the output terminal of which is connected withthe voltage/current input terminal of the external power network, a liquid crystal display screen which is connected with the ARM central processing unit by the GPIO, and the WIFI wireless network card which is connected with the ARM central processing unit by the interface.