Formwork system for preventing column foot root rot and construction method

The invention provides a template system for preventing foot rot of a column. The template system comprises a bottom template layer and a main template layer, the bottom formwork layer is arranged on the periphery of the concrete column base, and a sealing gasket is arranged at the bottom end of the bottom formwork layer. The main template layer is arranged on the bottom template layer and is formed by assembling a closed template and a pull-out template; a window used for vibrating concrete is formed in the pull-out type formwork, a sliding groove is formed in the window, and a pull-out plate is arranged on the sliding groove in a matched mode. Wherein the distance of the drawing plate entering the window along the sliding chute is adjusted by drawing/pushing the drawing plate, so that the size of the opening of the window is controlled. The invention further provides a construction method of the formwork system for preventing the column foot root rot. The formwork system is simple in structure and convenien