Compatibility test system

The invention discloses a compatibility test system comprising a sealing tank, a heating piece and a constant-temperature cover body. The sealing tank is provided with an air inlet and an air outlet and includes a tank body and a sealing cover; the sealing cover and the tank body are detachably connected to define a test cavity; the constant-temperature cover body is arranged in the test cavity; the heating piece is arranged in the constant-temperature cover body; and a mounting part for mounting a sample is arranged on the outer side face of the constant-temperature cover body. With the compatibility test system, the compatibility between different samples and different test gas can be tested. The test system can be used conveniently. Since the heating piece is arranged in the constant-temperature cover body and is not in contact with test gas directly, the heating piece does not make any reaction to cause damages like corrosion, so that the service life is prolonged. Moreover, the heating piece heats gas in