The invention relates to a hydraulic-vibration inclinable low temperature testing table for an electric power closed-loop single gear box. An inclinable testing table body for the power closed-loop single gear box, a transverse vibration device, a low temperature testing system, a first gantry framework integral stand column and a second gantry framework integral stand column are fixed on vibration-isolation T-shaped groove iron casting platform; a first gantry vertical hanging vibration system and a second gantry vertical hanging vibration system are fixed on the first gantry framework integral stand column and the second gantry framework integral stand column respectively; the low temperature testing system comprises a low temperature cooling system, a heat-insulation cooling circulating flexible pipeline and axial-flow machine assembling body and a low temperature test wooden cold-air circulating box; the low temperature cooling system provides cold air for the low temperature test wooden cold-air circulating box in a circulating mode through the heat-insulation cooling circulating flexible pipeline and axial-flow machine assembling body. The problems that in the prior art, when a tested gear box is disassembled and installed on different testing tables for tests, the tests are cumbersome, and testing results are inaccurate are solved.