The invention relates to a bamboo machining device, in particular to an automatic bamboo machining device. The technical problem to be solved by the invention is to provide the automatic bamboo machining device with high pressing tightness degree, easy waste chip collection and high automation degree. In order to solve the technical problem, the invention provides the automatic bamboo machining device. The automatic bamboo machining device comprises a worktable, a first guide plate, a collecting drawer, a pull ring, a first flat belt, a first motor, a first belt wheel, a second flat belt, a second guide plate, a support wheel and the like; the back side of the collecting drawer is connected with the worktable through an extension part through a hanging hook connecting mode; the front end of the collecting drawer is connected with the pull ring through a screw mode; and the lower part in the worktable is welded with the first guide plate. The automatic bamboo machining device enables a pressing plate and a grinding wheel to synchronously ascend and descend, and is provided with a pressure sensor glued at the bottom of the pressing plate for timely monitoring the pressing degree between the pressing plate and bamboos and returning signals to a controller.