The invention relates to a claw pole magnetic property nondestructive testing device and method adjustable in test temperature. The device comprises a pedestal arranged in an incubator in a magnetismisolating way, a winding ferrule and an excitation coil which are arranged on the pedestal from inside to outside as well as a to-be-tested claw pole part arranged at the top of the pedestal, whereina measuring coil is arranged in the to-be-tested claw pole part, a magnetic conductive ring forming a magnetic field loop with the to-be-tested claw pole part is arranged outside the measuring coil, the excitation coil is connected with a direct current magnetic property measuring instrument and receives an excitation voltage, the measuring coil outputs an induced current to the direct current magnetic property measuring instrument by generating the induced current, the direct current magnetic property measuring instrument records an output excitation current, the detected induced current is converted into an induced voltage and integration is performed on the induced voltage in the time domain to obtain magnetic induction intensity, the whole magnetizing curve of the to-be-tested claw pole part is obtained through measuring and calculating, and magnetic permeability of the claw pole part is represented. The device provided by the invention constructs operating magnetic field distribution highly similar to the actual generator by simulating temperature conditions in a generator operation process according to magnetic circuit characteristics of a claw pole type generator, thus rapidtesting is performed.