A microchannel plate(MCP)is a superfast response electron multiplier that is widely used in image intensifiers and photomultipliers. Herein, first, the principle of MCP input enhancement film is introduced; subsequently, a film with a high secondary electron emission coefficient is deposited on the input end of the MCP via vacuum coating, and the characteristics of the film are characterized by surface resistance and X-ray photoelectron spectroscopy(XPS). Through experiments, the signal-to-noise ratio, MCP gain, and image intensifier resolution of the coated MCP and conventional MCP image intensifier are measured. The results show that the signal-to-noise ratio of the image intensifier and the MCP gain of the coated MCP are higher than those of the conventional MCP; however, the resolution of the image intensifier is lower. For the conventional and coated MCP image intensifiers, the signal-to-noise ratios are 25.27 and 29.53, respectively; the average MCP gains are 209.5 and 450.5, respectively; the average resolutions of the image intensifier are 61 and 54.75 lp/mm, respectively. The increase in the signal-to-noise ratio of the image intensifier and MCP gain are ddue to the inncrease in thee surface secondary electrron emissionn coefficient aafter the MCCP input is coated. Inn addition, owwing to the iincrease in thhe secondary electron emiission coefficcient of the MMCP input surface, tthe number oof scattered electrons onn the MCP iinput surfacee increases, tthereby decreeasing the resolutionn of the MCP image intenssifier.