We have fabricated $FeSe_x$ superconducting thin films at much different substrate temperatures of 430 and $610^{circ}C$ on $Al_2O_3$(0001) substrates by using a pulsed laser deposition (PLD) technique. Superconducting transitions for both films were shown around 10 K, but their transition width and growth directions of grains were different. We found that superconducting tetragonal FeSe phases and non-superconducting hexagonal FeSe phases were coexisted in the sample grown at the low temperature of $430^{circ}C$, whereas the hexagonal FeSe phase was decreased with increasing fabrication temperatures.