Thank you,Marco.
Yes.
Because my component uses OracleData,
then doa41dXE5 automatically added to "Requires".
And I found it!!
My DOA is installed to 'C:\Users\Public\Documents\RAD Studio\12.0\Bpl',
and doa41dXE5 is there!
I added the path to Project.Option,then No Error has occured.
I could install my component to DelphiXE5.
Thank you!!!!