The invention provides a steaming and cooking resistant performance testing structure. The structure comprises a top cover and a pedestal, wherein a first groove is formed in the bottom end of the top cover; a second groove is formed in the top end of the pedestal; the bottom end of the top cover is connected with the top end of the pedestal; a sealing ring groove is formed in the inner surface of the second groove; a sealing gasket for fixing the inner surface of a sample under test is blocked in the sealing ring groove; the diameter of the sealing ring groove is equal to that of the inner surface of the sample under test; a lug boss is arranged on the inner surface of the first groove and used for fitting with the outer surface of the sample under test; the sample under test is fixed between the lug boss and the sealing ring groove; the second groove is used for containing a solution for testing the steaming and cooking resistance of the sample under test. According to the invention, the solution in the second groove and the gas evaporated from the solution can only be in contact with the inner surface of the metal cover sample under test, and only react with and corrode the inner surface of the metal cover sample under test; the structure is convenient to test the corrosion extent of the inner surface of the metal cover after steaming and boiling, and to ensure the accuracy in analyzing the corrosion extent of the inner surface of the metal cover after steaming and boiling.