 A new type of black phosphorus, BP, based metasurface has been developed which can be used to study its reflection responses and sensing capabilities. This metasurface consists of multiple bulges which allow for the coupling of dipole and polypole resonances. By adjusting the size and shape of these bulges, it is possible to tune the reflection spectrum of the metasurface. Additionally, the reflection spectrum of this metasurface can be tuned depending on the polarization of the incoming light. Furthermore, the metasurface can be used to detect changes in the environment due to its high sensitivity. This article was authored by Ning Xiu and Yang, Yixuan Wang, Ling Xiaoli, and others.