The present invention provides a film deposition system and method by combining a plurality of gas supplying apparatuses and a deposition apparatus being in communication with the plurality of gas supplying apparatuses. By means of respectively providing different types of vapor precursors with high concentration and high capacity into a process chamber of the deposition apparatus through the plurality of gas supplying apparatus, the deposition reaction is accelerated so as to improve the efficiency of film deposition. In an embodiment of the gas supplying apparatus, it utilizes a first gas for providing high pressure toward on a liquid surface of the precursor, thereby transporting the precursor into an atomizing and heating unit whereby the precursor is atomized and then is heated so as to form a high-concentration and high capacity vapor precursor transported by another carrier gas.