The narrowband active control system is suitable for controlling low-frequency harmonic noise. In practical applications， the problem of reference signal mismatch caused by the rapid frequency changes of the original noise will seriously degrade the per formance of the narrowband active control system. Existing frequency estimation algorithms often struggle to balance the speed， ac curacy， and computational complexity required to track the actual frequency. This paper proposes a Notch-HAQSE frequency esti mation algorithm for narrowband active control， which extracts any number of line spectrum frequency components from the refer ence sensor signal by combining a notch filter with a high-precision single-frequency estimation algorithm based on DFT coeffi cients （HAQSE）. The synthesized reference signal is sent to the controller to complete secondary signal updating. Simulation and experimental results show that， compared with other frequency estimation methods used in active control， the proposed method ac curately identifies and rapidly tracks multiple frequencies while significantly reducing computational complexity. It effectively ad dresses the problem of reference signal mismatch and multi-line spectrum vibration noise control.