[en] In order to protect the LHW antenna, it is necessary to measure the antenna temperature. According to the antenna specifications, the K type thermocouple is selected as the measurement tool. The signals generated by 8 thermocouples are acquired by a temperature logging device with high speed, and the measurement data are read remotely by software for display. Fiber communication is adopted to resist the EMI brought by tokamak in the loop of measurement hardware. The test results show that this method is able to real time reflect the trend of antenna temperature accurately, which lays a foundation for further antenna thermal protection.(authors)