An apparatus for delaminating a bamboo into fibers includes a machine frame, a machine seat arranged in a middle of the machine, a machine cover matching with the machine seat, a push plate, a power source, and an elastic member. The machine seat includes multiple grooves formed in a top to respectively receive therein bamboo pieces. The machine cover includes multiple ribs formed on a bottom thereof. The machine cover is slidable relative to the machine seat to have the ribs of the machine cover respectively receivable in and engageable with the grooves of the machine seat so as to sandwich bamboo pieces therebetween. A push plate is driven by the power source to selectively move relative to the machine seat and has a bent end portion that bends and pushes portions of the bamboo pieces to slide on the top of the machine cover.