Terahertz waves are the intersection of macroscopic electronics and microtourism research, and have been highly valued by domestic and foreign governments, research institutions and other departments because of their inevitable role in detection, imaging, radar, military defense, etc. However, high cost and high loss are still important factors affecting the development of terahertz. The perovskite preparation process is simple, low cost and good efficiency, which fully meets the needs of terahertz optoelectronic devices. At the same time, the easily adjustable nature of perovskites makes metasurfaces improve their shortcomings of high manufacturing cost and difficult to adjust, so that a structure can have multiple uses. Therefore, in this paper, two types of perovskite coding surfaces are designed at 0.1THz-0.14THz, consisting of organic-inorganic hybrid perovskite CH3NH3PbI3 (MAPbI3), polyimide and aluminum, and the operating frequency and reflection phase of the two structures are changed by light control, respectively. Through CST simulation, the first can operate at a frequency controlled by light, from only operating at 0.1 THz, but with high efficiency, to operating between 0.1 THz, thereby changing the direction of beam reflection. To a certain extent, this paper fills the gap of coding metasurfaces in the field of light field control, and provides an idea for subsequent research.