The equipment of RH600 Hydrogen Analyzer (Fusion) was adopted to measure the hydrogen content of Nb47Ti alloy bars, with Φ50 mm×40 mm after different annealing processes in RX-460 electric furnace. Based on the analysis results, a dehydrogenation method was proposed. The results indicate that the main hydrogenation takes place at the annealing temperature of 1200 oC, while the hydrogenation can not occur in the subsequent annealing at 950, 930 and 900 oC. The hydrogenation phenomenon occurring in Nb47Ti alloy is mainly attributed to the joint effect of the high activity constituent elements and the rare hydrogen atmosphere. The 800 oC/3 h and 800 oC/6 h vacuum heat treatment can reduce the hydrogen content in Nb47Ti alloy effectively from 60 μg/g to 21 and 29 μg/g, respectively