In order to study the changing rules of the reflective characteristics of the reflective film in a curved state， the mapping relationship between the dihedral angle of the reflective surface of the curved Cube Corner Reflector （CCR） and the bending angle is established based on the principle of volume invariance. The reflection theory analyzes the reflection characteristics of a single curved CCR and a curved reflective film， and obtains the axis-symmetric distribution of the light rays emitted by the single curved CCR and the maximum theoretical effective bending angle of the curved reflective film is 70.52°. Finally， using ray tracing software to simulate a single curved CCR and curved reflective film， the results show that the diffraction pattern of a single curved CCR and curved reflective film is axisymmetrically distributed when light is normally incident； the diffraction pattern of a single curved CCR and curved reflective film is axisymmetrically distributed； the maximum effective bending angle of the curved reflective film decreases with the increase of the bending angle， a decrease of 0.7%， and the deviation between the value and the theoretical value is small； when the bending angle is greater than 20°， the reflectivity of the convex reflective film is increased by 20% compared with the concave reflective film. At the same time， the experimental measurement results prove the correctness of the theoretical analysis.