The time delay characteristics of microring resonator device based on optical Kerr effect were studied. The coupling coeffecient was calculated by the coupled mode theory. The designed parameters were introduced including the material and component. The radius of microring was 300 μm. The sectional dimension was 400×1 000 nm2. The controlling methods of time delay was presented. The motivation was large time delay value as much as possible on the condition of less than ±5 ps ripple. The results show that the delay time is more than 130 ps; compensating bandwidth is about 20 GHz; free spectral range is 50 GHz; the working wavelength which is 1 550 nm satisfies the demand of dense wavelength division multiplexing system. The energy consumption is less than 0.8 dBm. The fast operating speed is ps order and small capacity which is less than 3 mm2 is great advantages for the device. The devices provide references for the delay lines in all optical communication networks.