The utility model discloses a rock specimen circulation is wet freeze thawing environmental simulation and damage degradation testing arrangement futilely, its characterized in that: the device includes vacuum pump and gas piping, water pump and liquid pipeline, temperature control box: the rock specimen is placed to the sample chamber in the temperature control box, and radial and axial set up high temperature resistant radial and axial deformation sensor respectively on the rock specimen, and vacuum pump connection gas piping inserts the sample chamber top, and water pump one end connection liquid pipeline inserts bottom the sample chamber, in establishing level sensor and place the sample chamber in on the sealed lid, the sample chamber outside sets up CT scanning device. The utility model discloses a computer program controller control realize containing crack rock sample normal atmospheric temperature to high temperature dry, the saturation is forced in the vacuum, the cooling freezes and heat up and unfreeze a lot of number circulation of complex environments such as melting and simulate, adopt the computer to go on radially and axial strain data acquisition and record, adopt CT scanning system to test the freeze -thaw cycle in -process damage degradation that wets futilely repeatedly. The device has automatic, integration characteristic, and economic environmental protection, and human intervention is few, and test is efficient.