This　paper　aims　to　contribute　to　the　understanding　of　laser　irradiation　effect　on　the　wettability　of　metal　oxides　ZnO　and　ZrO2.　It　is　shown　different　behavior　for　different　crystals.　The　stable　superhydrophobic　surface　with　the　water　contact　angle　(CA)　151　of　the　ZrO2　substrate　could　be　rapidly　prepared　by　KrF　laser　irradiation.　Comparatively,　the　laser-treated　ZnO　sample　exhibited　hydrophilicity　with　the　CA　of　20　at　the　first　beginning,　and　after　being　storage　in　air　for　a　while,　it　turned　into　final　stable　hydrophobic　state　with　CA　of　120.　Based　on　AFM,　XPS　measurements　and　Cassie-Baxter　model　analysis,　it　could　be　concluded　that　final　hydrophobic　states　of　both　ZnO　and　ZrO2　samples　are　mainly　attributed　to　the　formation　of　micro-nano　fluctuant　geometry　structure　rather　than　the　change　of　surface　chemistry.　The　photoinduced　hydrophilic　effect　of　ZnO　is　associated　with　the　hydroxyl　absorption　on　the　defective　sites　induced　by　UV　laser　irradiation.