The invention relates to an electrodynamic force power closed loop gear case electromagnetic excitation inclinable testbed. The testbed comprises an electrodynamic force closed loop gear case inclinable testbed body, a low temperature test system, an electromagnetic excitation system and a foundation cast iron platform; a low temperature cooling system in the low temperature test system is communicated with a low temperature test wooden cold air circulation box at the outer side of a shell of a tested gear case through a heat-preserving and heat-insulating cooling circulation flexible pipe and an axial flow machine assembly; the electromagnetic excitation system and the electrodynamic force closed loop gear case inclinable testbed body are fixed to the foundation cast iron platform, and the electromagnetic excitation system is linked with the electrodynamic force closed loop gear case inclinable testbed body. By means of the inclinable testbed, the problems that in the prior art, it is complex to dismount and mount the tested gear case to different testbeds for testing, and the test results are not accurate are solved.