Aiming at the problem of signal distortion and late maintenance of wired transmission in remote monitoring of dykes, some problems such as difficulty in developing wireless communication technology and high cost. By using sensor multinode measurement combined with RS485 wired transmission, 2.4 G wireless networking and GPRS network. A lowcost, lowpower, easytodevelop data remote radio transmission scheme is put forward,the system can realize highprecision , largescale and allweather dam slope automatic monitoring. After testing, the system has high accuracy, strong antiinterference, remaining in the same state angle sensor to measure, and the relative error is less than 0.2%. It also has a good linearity between -30° and +30°. The temperature sensor can meet the accuracy of ±5 ℃,and the humidity sensor can meet the precision of +3%.During the testing process, the wireless network is stable and the remote data transmission is reliable, and the monitoring interface is intuitive and clear.The system has practical value in dam slope stability and slope protection detection.