In this study, we numerically investigate surface plasmonic triple Fano resonances and optical sensing in the near-infrared band using a hybrid metasurface consisting of concentric C3-hole and circular-ring-aperture unit cells. The results reveal that by changing the symmetry breaking of the C3 unit cells, we can not only induce a tunable multi Fano resonance effect but also enable self-reference optical sensing. In addition, a radiation monitoring sensing capability, which depends on the depth of the Fano dips, can be realized by varying the inner radius of the circular-ring-aperture unit cells. Our results provide a new perspective for the design of compact and tunable Fano resonance photonic devices and enable the incorporation of periodic subwavelength metal nanostructures into relevant biosensing and optical communication applications.