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The temperature and humidity environment of cable channel is directly related to normal safe operation of the transformer substation.Based on wireless sensor network to realize the real-time monitoring of cable conduit temperature and humidity,monitoring data show that the four curve of temperature and humidity overall change smoothly,the average temperature and humidity at ID4 were 25.5 ℃ and 59.3%,ID11 average temperature and humidity were 26 ℃ and 67.2%.