Abstract: The Bump inlet dynamic characteristics wind tunnel test is introduced.When air-craft pitching maneuver ,the bump inlet performance parameters show periodic change with time, atα>10°,under up pitching,inlet total pressure recovery coefficientσ,integrated total pressure distortion of inlet W ,inlet total pressure circumferential distortion Δσ0 reduce,under down pitch-ing,the above parameters increase,which are less than those under up pitching,and for a pitch period to form a close loop.The inlet total pressure pulsation average turbulence Tu change little in the process.