The invention provides a dynamic derivative calculation detection method and a dynamic derivative wind tunnel test method under a rotating condition, comprising the following steps: a flow field calculation step: according to a dynamic derivative calculation formula to be calculated, selecting a corresponding definite motion rule, according to the motion rule, performing flow field calculation ona coupled motion of a rotating compound oscillation, and obtaining a calculation result; A method for calculate that dynamic derivative data comprises the follow steps of: according to the calculationresult, calculating and obtaining the periodic average dynamic derivative data by using the calculation formula of the dynamic derivative and the corresponding motion law. The invention firstly designs the coupling motion of the rotational compound oscillation considering the rotational angular velocity. The invention skillfully utilizes the Fourier expansion and the orthogonality of the trigonometric function system to establish a calculation method of the dynamic derivative under the rotational condition. The invention comprehensively considers the rotational unsteady effect, improves the mathematical model accuracy, and provides the technical basis for solving the key flight problem of the rotating aircraft.