The distribution of solar panels is very dense, and it is difficult to monitor the temperature of solar panels in the traditional way. In order to obtain the surface temperature of solar panels more efficiently and conveniently, a wireless temperature measuring device is designed to monitor the realtime temperature of 10 solar panels in this paper. This temperature measurement using digital temperature sensor DS18B20, ultra low power 16 bit microcontroller MSP430F149 for data processing and the use of CC1101 wireless module for data transmission, and finally the temperature data of solar panels will be show on theLCD screen. By actual test,this system can montior 10 solar panels temperature data at the same time ,and the measurement precision can reach 0.1 degrees Celsius,wireless transmission distance up to 50 meters,in addtion ,the system has the advantages of stable transmission, low power consumption, low cost and so on.