The utility model relates to a measure on - -spot handheld device communication module, its characterized in that: by CPU, the RFID module, the GPRS module, infrared module of electric power and RS485module constitute, the RFID module is communicated through UART interface and CPU, realize the communication between handheld device and the user side through the antenna, the GPRS module is passed through the GPRS network and is realized the communication between handheld device and the backend server, the infrared ray is utilized to the infrared module of electric power, infrared emission circuit and infrared receiving circuit accomplish the wireless receiving and dispatching of signal, RS485 module realizes handheld device and intelligent ammeter's communication, communications network inserts soon, combines RFID automatic identification technique and the wireless network deployment mode of GPRS, has strengthened the function of measuring on -the -spot handheld device, has improved data transmission rate.