To solve the issue of the contradiction between photovoltaic power generation and plant photosynthesis for sunlight demand,we propose a design method of multi-passband polymer multilayer optical structure.Using polycarbonate[PC]and polymethyl methacrylate[PMMA],two polymer materials with different refractive indices,the passband position and passband bandwidth are calculated and adjusted by the transmission matrix method and TFCalc software.A 450 nm,660 nm,and 730 nm three-passband filter was realized by superimposing stacks of different band positions.The feasibility of the photovoltaic agriculture was confirmed by the power generation efficiency and the actual plant growth.