The active noise control system uses the theory of acoustic interference cancellation, and the reference noise is processed by an adaptive algorithm to generate an anti-noise signal. Aiming at the problem that the compressor of gas station has a high sound pressure level in the middle and low frequency bands and is difficult to cancel, this paper first analyzes the compressor noise in time-frequency, and then proposes an active noise control system based on adaptive IIR. The system consists of two It consists of a digital filter with adjustable parameters and a corresponding adaptive algorithm. Finally, use Xilinx FPGA as the core control module of the system to design the hardware of the system. The actual measurement results show that the noise reduction effect of this method can reach 20dBA in the middle and low frequency bands, the system convergence speed is 30us, and the hardware resource consumption is lower.