The wind profile radar has been widely used in many fields of the national economy.The application is not just confined to wind field data, and such information as echo intensity, signal noise ratio, and spectral width of speeds is more and more applied. It is very important to carry out the calibration of the wind profile radar. Taking CFL 03 wind profile radar as an example, a wind profile radar automatic calibration technology is introduced from technology design to signal process.The system composition and realization are discussed, and the radar is tested with outside measuring instrument.The machine test and built in automatic calibration results are compared. It is concluded that the precision of the automatic calibration system meets the requirements of radar operation and the design goal has been achieved.