Building plate light partition system

The invention discloses a building plate light partition system which comprises building plates. The top faces of the building plates are provided with transverse protruding strips, and the bottom faces of the building plates are provided with transverse grooves. In every two adjacent building plates, the transverse protruding strip of the building plate below is embedded in the transverse groove of the building plate above. All the building plates are combined in the mode to form vertical building plate bodies. U-shaped keels are fixed to a right side wall through steel nails, and one sides of the adjacent vertical building plate bodies of the right side wall are inserted in U-shaped grooves of one U-shaped keel and fixed into the U-shaped grooves through an adhesive. The other sides of the vertical building plate bodies are fixedly provided with the other U-shaped keel through steel nails. The adopted building plates are provided with the transverse protruding strips and the transverse grooves, so that the contact area of the adjacent building plates is increased, connection is convenient, and connection strength is higher. Meanwhile, all the building plates are connected with walls through the U-shaped keels, and connection is convenient.