Raw bamboo mortise and tenon joint

The utility model discloses a raw bamboo mortise and tenon joint which comprises a center steel sleeve, a plurality of beam end steel sleeves, a plurality of first raw bamboos and a plurality of second raw bamboos. The end part of each beam end steel sleeve is fixed on the side surface of the central steel sleeve; a limiting piece is arranged in each beam end steel sleeve; the limiting piece is composed of four wedges. The end faces of the four wedges are fixedly connected to form a cross-shaped structure. The thicknesses of the wedges are gradually increased from outside to inside along the beam end steel sleeve; a limiting cavity is defined by every two adjacent wedges and the inner wall of the beam end steel sleeve. One limiting cavity corresponds to one first raw bamboo, the end of each first raw bamboo is inserted into the corresponding limiting cavity, all the second raw bamboos penetrate through the center steel sleeve, through holes can be prevented from being formed in the rawbamboos through the conn