Based on observation tests of the domestic BD sounding of ball loading,a method for the evaluation of wind measurement was established.The test results showed that the accuracy of BD wind was nearly the same as that of RS92 at ascent stage,and the consistency was in good agreement.The errors of the RS92 wind at descent stage and ascent stage were of the same magnitude.The initial part of the descent stage wind data needed to be pretreated or controlled when it was used.The error of the decline period of BD wind was generally the same as that of the RS92 at descent stage,except for the initial explosion of the ball.Essentially,it was close to the measurement requirements of WMO.Meanwhile,the rapid decline brought higher technical requirements to positioning.In addition,BD dropsonde of ball-loading could encrypt an original sounding in terms of time and optimize the existing sounding station network in terms of space,which would have better application potential.