A load lock chamber (12) is connected in a front stage of a film forming chamber (11) through a damper and the like. A pipe to which a N2 gas and aeriform or fog-like H2O are supplied is connected to the load lock chamber (12). The pipe is led from a vaporizer (13). Inside the load lock chamber (12), a carrying section 15 on which a wafer (20) is placed is provided, whereas outside the load lock chamber (12), a cooler (14) cooling a carrying section (15) by means of liquid nitrogen is arranged. The temperature of the carrying section 15 is held at, for example, −4° C.