The　pointwise　estimation　for　the　density　derivative　function　with　multiplicative　noises　by　wavelets　was　discussed.　Wavelet　estimator　of　the　density　derivative　function　was　constructed　and　the　upper　bounds　over　Hölder　space　were　provided.　Results　show　that　the　upper　bounds　of　the　convergence　order　of　the　wavelet　estimator　are　the　same　for　any　x.　©　2018,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.