Motorcycle engine mounting rack

The invention discloses a motorcycle engine mounting rack. The motorcycle engine mounting rack comprises a frame structure which is formed by a left vertical plate (A), a right vertical plate (B), a rear vertical plate (C) and a top plate (D), wherein a first engine mounting hole (1), a frame rear inclined tube yielding notch (2), a second engine mounting hole (3), a side bracket mounting hole (4), a lower connecting tube mounting hole (5) and a main bracket mounting hole (6) are sequentially formed on the left vertical plate (A) and the right vertical plate (B) from top to bottom; a platy carbon tank bracket mounting rack (7) is welded on the left vertical plate (A); a storage battery bracket mounting rack (8) and a hanging pin (9) are arranged outside the right vertical plate (B); and a main frame through hole (10) is formed on the top plate (D). The motorcycle engine mounting rack is reasonably laid by fully utilizing the space structure, is compact in structure, light in weight and high in assembling consistency, is connected with the frame through welding and is used for mounting the engine and other parts such as carbon tanks and storage batteries.