The invention discloses a development machine capable of performing comprehensive coal mining operations, which comprises a development machine mainframe, a cutter head and a shovel plate component, wherein the cutter head is positioned on the left side at the front end of the development machine mainframe; the shovel plate component is arranged on the front side of the development machine mainframe and is a coal pushing plate, which comprises a coal dropping plate, a plate seat and a spring; a front baffle of the coal dropping plate and a rear baffle of the plate seat are connected through the spring; the rear baffle of the plate seat is inserted between a rear limiting plate and the front baffle of the coal dropping plate; and when the rear limiting plate clings to the rear baffle, the spring is under a compressed condition. In the development machine, the left side of the coal dropping plate can be backwards inclined when being pressed by coal to form a coal drop, which facilitatesthe conveying of the coal by a scraping plate conveyor arranged on the left side of the development machine; and when the coal pushing plate advances, most of the coal enters the scraping plate conveyor from the left side of the coal pushing plate and is not leaked, thus the coal conveying speed and the coal conveying efficiency are both high.