As an optically sensitive unit, the silicon-based integrated photonic resonator plays a vital role in the performance of chip-scale optical gyroscopes. In this paper, the integrated resonator of the photonic integrated gyroscope with the enhanced reciprocity-sensitive dual micro-ring architecture is the research object. The key structural parameters of the dual microring resonator are analyzed through finite-difference time-domain simulation. Constructing a simulation link allowed the study on the internal relationships between quality factor, fineness, coupling coefficient, and transmission loss. The resulting insights formed the basis for structural layout design. The dual microring resonant cavity device is then fabricated through a multiproject wafer tape-out using a passive silicon-based photonic integration process. Test results show that, for a microring radius of 500μm, the coupling coefficient between waveguide and microring is 0.3, the working wavelength is around 1550 nm, the free spectral range is 0.182 nm, the 3 dB bandwidth is 0.045 nm, the fineness is 4.04, and the quality factor is ~3.4×104. These research results provide a firm foundation for further design optimization of the dual microring resonator.