ZnO nanoflowers are synthesized on AlN films by solution method.The synthesized nanoflowers are composed of nanorods,which are pyramidal and grow from a central point,thus forming structures that are flower-shaped as a whole.The nanoflowers have two typical morphologies:plate-like and bush-like.The XRD spectrum corresponds to the side planes of the ZnO nanorods made up of the nanoflowers.The micro-Raman spectrum of the ZnO nanoflowers exhibits the E2(high)mode and the second order multiple-phonon mode.The photoluminescence spectrum of the ZnO nanoflowers exhibits ultraviolet emission centred at 375nm and a broad green emission centred at 526nm.