The　digital　products　are　copied　and　transmitted　widely　with　the　development　of　Internet　rapidly.　The　copyright　protected,　the　authenticity　and　the　integrality　authenticated　are　brought　at　the　same　time.　This　paper　proposes　a　digital　watermarking　embedding　algorithm　based　on　Discrete　Wavelet　Transform　(DWT)　for　color　image.　The　original　color　image　is　transformed　into　the　YIQ　color　space,　and　the　watermark　was　embedded　in　both　Y　component　and　Q　component.　The　algorithm　proposed　in　this　paper　can　contain　more　embedding　intensity　and　invisible.　The　experimental　results　show　that　the　watermarks　are　robust　against　JPEG,　filter,　crop　procession　and　noise　etc.