In order to realize point-to-point data transparent transmission and solve the problems of large package size using common protocols, an intelligent remote monitoring system is designed using enhanced device protocol to achieve efficient and reliable information interaction between intelligent terminal and cloud platform. The system uses low-power MCU to control sensor to collect information. The wireless signal is transmitted through M6312 module. Enhanced device protocol is used. Information uploading, receiving commands from cloud platform, point-to-point data transparent transmission can be realized using this protocol. The packet sizes of different protocol are measured. The results show that the package size of enhanced device protocol is smaller than that of HTTP and MQTT.