The invention discloses a method for multi-screen parameter management and pre screen brightening of a tconless screen. Two zones including a tcon zone and a hwcfg zone are divided in an EMMC memory; the tcon zone being a raw zone does not support a file system, only stores drive data of the tconless screen, and supports storage of a plurality of tconless drive data; the hwcfg zone being a zone with a file system is used for storing some relevant data of all tconless screens supported by the item, wherein the data include drive data and picture quality parameters, and so on of each screen. On the basis of a raw zone mode, pre screen brightening is carried out by preset special default screen drive data; and thus the screen is brightened by using the default drive data when power-on and starting up are carried out for the first time.