The phase compositions of hydrided TiCr1.8-xVx hydrogen storage alloys were examined by X-ray diffraction (XRD) and thermal gravity-differential scanning calorimetry-mass spectrometry (TG-DSC-MS) firstly to study the dependence of hydrogen desorption characteristics with temperature, and the states of released hydrogen were inspected by the mass spectrometry. The active energy of hydrogen desorption was calculated at different heating rates by the differential scanning calorimetry tests.