In this paper, a T-type nonreciprocal two-channel filter composed of straight waveguide and rectangular resonator is designed based on non-magnetic two-dimensional photonic crystal. The rectangular resonator has the characteristics of local multi-frequency electromagnetic wave and the electromagnetic wave propagation direction is adjustable, and the structure size of the straight waveguide determines the carrying capacity of the electromagnetic waves with different symmetries. Nonreciprocal two-channel filtering function is realized using the characteristics of the rectangular resonator and straight waveguide. The experimental results show that, in the case of forward transmission, the filter achieves filter transmission with central wavelengths of 1534 nm and 1574 nm, and 16 nm and 8 nm bandwidth, respectively, corresponding to the insertion loss of 0.4 dB and 0.36 dB, respectively, and inter-channel isolation of 33 dB and 22 dB. In the case of backward input, the mismatch of the electromagnetic wave symmetry mode causes no transmission, which shows that the designed dual-channel nonreciprocal filter has a good filtering effect and contributes to the development of the future all-optical communication integration field.