For reducing the influence of short-ware channel to signal output power of AD after end in receiver, the paper proposes a digital AGC algorithm for short-ware channel based on logarithmic mixture. It analyzes the linear adjustment algorithm, logarithmic adjustment algorithm, natural logarithmic adjustment algorithm of digital AGC, adopts a mixed adjustment algorithm of natural logarithmic and logarithmic, implements the stability change of digital signal power of AD after end in short-ware receiver. Simulation results show the mixed AGC algorithm achieved the compromise between AGC tracking rate and sensitivity of noise, the overall performance is optimal, and the complexity is basically the same as linear, logarithmic and natural logarithmic algorithm.