PURPOSE: To provide a device constitution in which testing accuracy has been enhanced, in an evironmental corrosion test.

CONSTITUTION: A corrosion testing device 1 is used, which is made up of a corrosion test vessel 2 provided with both a first inflow port 5 for supplying corrosive gas or dry inert gas and a first outflow port 6 for exhausting the above gas, and a storage vessel 3 which is adjacent to the corrosion test vessel 2 via a sample transport door 4, and also is provided with a glove 7, a sample take-out door 8, a second inflow port 9 for supplying dry inert gas, and a second outflow port 10 for exhausting this gas. A corrosive gas is supplied to the corrosion test vessel 2, and in such a state that set conditions have been satisfied, the sample transport door 4 is opened, and by using the glove 7, a test sample is shifted from the storage vessel 3 to the corrosion test vessel 2 for carrying out corrosion test.