1. A method for controlling a cartridge of a welding helmet that sequentially performs a welding step, a cutting step, a grinding step, and an X-mode step automatically according to a preset condition, a shade level of an LCD screen, and an operating time of the cartridge, the cartridge including the LCD screen, a display unit, a controller, and a memory, the method comprising: calculating, by the controller, a work time during which the LCD screen of the cartridge is darkened and storing the calculated work time in the memory and displaying the stored work time on the display unit when entering a life mode entrance step, and storing data of an operating state in multiple preset languages in the memory and displaying data of the operating state in one language, which the controller has selected from among the multiple languages, on the display unit.