A visible/infrared broadband dichroic beamsplitter which can meet the light energy boundary of polarization remote sensing optical system was designed with the induced-transmission method. The design was based on polarization characteristics of the visible/infrared broadband dichroic beamsplitter, and actual characteristics of the dichroic beamsplitter were analyzed. When the polarization characteristics at the transmission spectrum from 400 nm to 900 nm was calculated, the coating series was designed on the back of substrate with the equivalent layer theory to control the polarization character of the dichroic beamsplitter. A needle optimal algorithm was adopted to set various optimization objectives, and came out with three different designs which have respective polarization ranges of 0.013~0.0376, 0.068~0.108 and 0.098~0.147. The design result shows that the polarization characteristics of dichroic beamsplitter at transmission spectrum are controllable to some extent, and the design can meet the needs of different polarization characteristics in optical system.