To achieve remote access to wallpaper machine dryer temperature detection, a temperature data transmission of Ethernet communication interface is designed. PT100 is used as the temperature sensor and the input circuit is built as well. A temperature signal acquisition system is established with controller STM32F103 whose A/D converter is used to convert voltage into data. W5500 chip is used as Ethernet network interface chip and high speed data transmission between STM32F103 and W5500 is carried out through the new high speed SPI interface. The Ethernet communication interface is easily achieved with W5500 own TCP/IP protocol stack instead of transplanting protocol stack. The test result shows that data transmission is reliable and fast through this interface.