The invention discloses a method for manufacturing a bottom grid type FED lower plate, which comprises the following steps: firstly, printing a grid layer pattern on a cathode glass substrate, exposing and sintering the pattern, and printing an anticorrosive electroplating-resistant oil ink layer on the grid layer pattern; secondly, using a grid as an anode to plate AgCl on the surface of a grid layer; thirdly, printing a dielectric layer pattern on the grid layer pattern and sintering the pattern; and finally, printing a cathode layer pattern on the dielectric layer pattern and sintering thepattern. By electroplating an AgCl insulating layer on the surface of the grid layer to protect the grid, the electric field between the grid and the cathode can protected from influences, and the problem that a short circuit is easy to form between the grid and the cathode during the manufacture of the bottom grid type FED lower plate is solved; and the method has compact process, is simple and feasible, and can achieve good effect.