The patent data of titanium alloys in Derwent Innovations Index（DII）were collected

and the quantitative result reveals that the aerospace involves the highest number of application on titanium alloys.Based on the above result

it was got deeper insight in applications in the aerospace

such as patent numbers of past years

the competitive ability of facilities

patent quoted times and patent technology layout in quantitative ways.Furthermore

statistical analysis was made to examine whether the two&eight principle worked in the patent analysis.Finally

the constructive suggestions for the enterprises in titanium field were presented.