In light of the frequency mismatch in active structural vibration control under multi-frequency narrowband excitation， a hybrid adaptive active vibration control method is proposed based on the parallel-form filtered-x least mean square （FxLMS） algorithm. In the proposed algorithm， multiple bandpass filters in feedforward paths decouple reference signal into multiple narrowband signals. Thus， the multi-frequency narrowband active vibration control is transformed into multiple narrowband active vibration control to speed up the convergence. Besides， the feedback path improves the robustness against time-varying and broadband noise disturbance. Then， the analysis of the proposed algorithm uncovers the conditions demanded for its stability and convergence. Finally， the effectiveness of the proposed algorithm is verified by a Adams-Simulink simulation system and active micro-vibration control experiments. The results show that the proposed algorithm can suppress micro-vibration of multi-frequency narrowband disturbances and exhibit better robustness in the condition of disturbance frequencies mismatch and broadband noise.