Temperature wireless monitoring system for multitesting point based on FPGA was designed to achieve the goal of the realtime monitoring in the field of nation defense, astronomy and industry. This system was constructed with base of FPGA（filed programmable gate array）, including acquisition of temperature signal, storage of data, transmission of data and displaying of data . The temperature analog signal is converted into digital one which is stored into FIFO（first in first out）in the smart sensor. The data in FIFO is transferred with Bluetooth protocol to PC. Finally PC is in the charge of displaying of data. With the support of this system the personnel not only can monitor the realtime temperature without checking by themselves, but also can analyze the data recorded.