A T-shape suspended silicon nitride racetrack ring resonator sitting on a silicon dioxide pedestal is experimentally demonstrated. Compared with unsuspended device, it allows an enhanced interaction with the surrounded environment while maintaining a high quality factor. The resonator consists of a directional coupler with a waveguide width of 1.3 $\mu \text{m}$ and a ring structure with curve radius of 20 $\mu \text{m}$ . More than $1.6\times 10^{4}$ quality factor at a wavelength of 1550.4 nm can be obtained, with a moderate extinction ratio of $\sim 9.2$ dB and a free-spectral range of 5.48 nm. The measured device sensitivity is $\sim 247$ nm/RIU. The device is expected to have a wide optical sensing application prospect.