With　different　laser　energy　outputs,　a　series　of　ZnO　nanoparticles　were　prepared　using　the　method　of　the　pulse　laser　ablation,　which　were　characterized　by　transmission　electron　microscopy　(TEM)　images,　photoluminescence　spectra　and　Raman　spectra.　The　results　indicated　that　the　size　distributions　and　Raman　spectra　of　ZnO　nanoparticles　were　independent　of　laser　energy　outputs.　However,　with　the　increase　of　laser　energy　output,　the　photoluminescence　spectra　of　nanopaticles　exhibited　a　red-shift　because　of　agglomeration.　Finally,　the　mechanism　of　pulse　laser　ablation　for　ZnO　nanoparticles　was　also　discussed.