The microring resonator is one of the promising building blocks for future high-density and large-scale integrated optics. One of its important development trends is multiplying and arraying it. Recently, microring resonator arrays have become research topics. Based on transfer matrices of cells of directional couplers, ring resonators and straight waveguide resonators, a transfer matrix model for analyzing the transmission characteristics of microring resonator arrays is established. The effects of the distance between two adjacent columns on the transmission characteristics are discussed, and the transmission characteristics are numerically simulated under conditions of odd and even rows for different dimensions. With the proposed model, the schemes of improving filtering characteristics by changing the dimensions and coupling coefficients of microring resonator array are discussed. Finally, the relation between the transmission characteristics and intercavity coupling coefficients of the microring resonator array with the smallest dimension is numerically studied.