Molecular　dynamics　(MD)　simulations　focusing　on　the　interactions　between　MoS2　films　and　water　droplets　are　carried　out　in　this　article.　First,　the　wettability　of　an　ideal　MoS2　film　is　investigated　at　room　temperature,　then　the　influences　of　ambient　temperature　and　charge　density　of　the　MoS2　film　on　the　wetting　behaviors　of　water　droplets　on　the　film　are　also　discussed.　The　simulation　results　indicate　that　the　ideal　MoS2　film　is　slightly　hydrophobic,　and　the　ambient　temperature　plays　a　negative　role　during　the　wetting　processes.　The　observations　also　show　that,　once　charged,　the　wetting　property　of　MoS2　changes　massively,　from　slightly　hydrophobic　to　super-hydrophilic.　©　2017　IEEE.