A new system for measuring wind energy resources for wind farms is introduced. The system is modulized in design and achieves the remote measurement of gradient winds by means of the data collecting module with the field bus and wireless communication technology. This system can measure the meteorological elements needed for wind energy resource assessment for wind farms, and make data reports according to the national standards. Through a oneyear test and data analysis, the system has proved efficacious for measuring the wind energy resources to improve the capability of developing meteorology service.