Patent ID: 8026159

Claim:
A method of manufacturing a semiconductor device, comprising: loading a substrate into a processing chamber; processing the substrate by supplying plural kinds of reaction substances into the processing chamber multiple number of times; and uploading the processed substrate from the processing chamber, wherein at least one of the plural kinds of reaction substances contains a source gas obtained by vaporizing a liquid source by a vaporizing part; in processing the substrate, vaporizing operation of supplying the liquid source of the vaporizing part of vaporizing the liquid source is intermittently performed, and at least at a time other than a time of performing the vaporizing operation of the liquid source, a solvent capable of dissolving the liquid source is flowed to the vaporizing part at a first flow rate; and at the time other than the time of performing the vaporizing operation of the liquid source and every time performing the vaporizing operation of the liquid source a prescribed number of times, the solvent is flowed to the vaporizing part at a second flow rate larger than the first flow rate.