Abstract: Temperature monitoring is one of the important means for temperature control and anticrack the mass concrete construction process． However，there are still some drawbacks in the existing mass concrete temperature monitoring systems． For example there are large number of wires connecting to the temperature sensors，the monitoring parameters need to be calculated by hand． These drawbacks make the installation of temperature monitoring system very time-consuming and the information is not real-time． In this paper a mass concrete temperature monitoring system was developed，which was composed of wireless temperature sensors，wireless sensor networks and a smart monitoring software． The application of the monitoring system in the mass concrete construction of a large suspension bridge proved the convenience and reliability of the system． The features of automatic acquisition and storage of data，display and warning of the temperature of the mass concrete，data management and analysis made the system meet the requirements of the mass concrete temperature monitoring．