The temperature stability of the slot-waveguide ring resonators which are based on silicon on insulator (SOI) and embedded with SiO2 is simulated and analyzed theoretically. The temperature dependence of the nano-wire ring, slot-waveguide ring, and the slot rings with different structure parameters are compared. In room temperature, near the wavelength of 1.55 μm, the temperature dependence of the 5 μm-radius slot waveguide ring is 0.049 nm/℃, while the temperature dependence of the nano-wire ring is 0.092 nm/℃ at the same case, which is 1.88 times of that of the slot-waveguide ring. The widths of the slot and Si will also affect the temperature characteristic of the slot-waveguide ring resonators, when the slot width increases or the Si width decreases, the slot-waveguide ring resonators′ temperature dependence will decrease further. By using negative temperature coefficient material WIR 30-490 and optimizing the structure parameters of the slop waveguide, the temperature dependence of the resonate wavelength has decreased to 0.0023 nm/℃.