Abstract: With the development of multimedia technology,performance of media equipment has been greatly improved.The traditional audio equalizer is constructed by op-amplifiers and discrete components,being influenced by the specifications of discrete components.These equalizers have disadvantages of poor stability,and declining quality in shortterm and insufficient anti-jamming ability.Moreover,the analogy design is complicated,and the system debug and balance is difficult and time consuming.In contrast,full-digital audio equalizer has good performance and stability,but the price is expensive.We propose a new design method for audio equalizer,that is,to design a high precision and high SNR digital audio equalizer system based on field programmable analogy arrays(FPGA) and micro-controller.With this method,efficiency and performance will be greatly enhanced.