Easily constructed aerated concrete block with tenon

The utility model discloses an aerated concrete building block with tenons convenient to construct. The aerated concrete building block comprises a building block main body, a lower tenon and a side tenon, a left groove is formed in the left side of the upper surface of the building block body, a first oval groove is formed in the right side wall of the left groove, a center groove is formed in the middle of the upper surface of the building block body, second oval grooves are symmetrically formed in the left inner side wall and the right inner side wall of the center groove, a right groove is formed in the right side of the upper surface of the building block body, and a third oval groove is formed in the left side wall of the right groove. A positioning hole is formed in the bottom wall of the left groove; the lower tenons are symmetrically arranged on the lower surface of the building block main body; the side tenon is arranged on the right side face of the building block body, the side tenon comprises a s