To solve the problem of the wheat yield estimation information lagging in current Henan province area, with the tech of integrating the sensor, GPS and wireless communication, docking the agricultural machinery equipment, the wheat yield measuring and information service system is built that is based on the multi-sensor technology to realize the simultaneous wheat yield measuring with the wheat harvest. The system application experiment has been carried out in the 800-mu experimental field in Changge county, Xuchang City in June 2015. The experimental results show that the measurement error of this system is less than 5% and could satisfy the actual demand of the real-time wheat yield measuring. The popularization and application of the system would provide the data reference for the wheat yield measuring in Henan province. Moreover, it also could provide data support for the obtaining of the spatio-temportal difference of the farmland information and offer the decision basis for the implementation of "precision agriculture".