Abstract: Abstract: As a kind of key equipment for conservation tillage, no-tillage seeder was increasingly hot in agricultural machinery field. The traction of no-tillage seeder, which was mainly transmitted from tractor through three-point hitch mechanism, was important to working performance and safety of no-tillage seeder, and became an important monitor parameter during no-tillage seeder working. In recent years, some research were studied for tractive resistance monitor, such as five-bar dynamometer designed by Yu Yan from Shenyang Agricultural University, and three-pin summing circuit designed by Xun Chunlin from Heilongjiang Bayi Agricultural University, the research mentioned above had achieved much whereas there were still some problems to be studied, which were including inconvenient use of the data acquirement equipment, field monitor only with wire transmission, soil-bin testing without filed testing and so on. This paper, which was aimed at tractive resistance remote monitor, developed a system that could collect signal at real time, transfer message using wireless network, in field mobile monitor, remote simultaneous monitor based on the above issues. The system detected tractive resistance by mounting three shaft bolt type transducers in three-point hitch rods, used wireless sensor network to acquire sensors signal and transmit the result to a Portable Terminal for Data Monitor (PTDM) in short distance, the PTDM based on embedded technology was for receiving data from wireless sensor network and transmitting them to monitor center in long distance. Using windows CE6.0 as the system environment of the terminal, and the software of the terminal developed with Visual C++ program was used for processing data, showing them on the screen of the terminal. The computer in remote monitor center was for monitoring the seeder tractive resistance and storing data when the no-tillage seeder was working. The flow of remote monitor was that when the long distance wireless data receiver received data from PTDM, the computer software developed with Visual Studio 2005 read data from a special serial port which was connect to the receiver via a serial data interface cable, the data were analyzed, processed, showed, stored by the computer software afterwards. To verify the performance of the system, a serial of tests were taken in China Agricultural University experimental station in city of Zhuozhou in Hebei province. A 2BMZJ-5 typed no-tillage seeder designed by collage of engineering of China Agricultural University was adopted as the testing seeder, and a John Deere 5-750 tractor was selected to supply traction to the seeder. Before testing, three wireless data collectors were absorbed on surface of the seeder body by four magnets, and a PTDM was placed in the tractor cab, the distance of the PTDM between the monitor center was more than 1 kilo meter. The testing results were saved in the computer hard disk after tests. By processing the tests data, the result showed that the tractive resistance remote monitor system for no-tillage seeder could monitor the tractive resistance of no-tillage seeder both in field and long distance monitor center, and the tractive resistance curve factually reflected the working status of the no-tillage seeder.