Interlocking type ecological slope protection brick

The utility model relates to the technical field of slope protection bricks, and discloses an interlocking type ecological slope protection brick which comprises a brick body, a rectangular planting groove is formed in the brick body, a rectangular water permeable opening is formed in the bottom of the rectangular planting groove, and slag bricks are movably inserted into the rectangular planting groove of the brick body. And a splicing brick is arranged at the lower part of the brick body. When the brick body is initially installed on the lowest surface of the slope, the splicing brick is pulled out from the bottom of the brick body, so that the edge of the lower end of the brick body is in a flat state, and the brick body is better attached; the slag bricks are placed in the rectangular planting grooves of the brick body, then plants are planted in the rectangular planting grooves between every two adjacent slag bricks, due to the fact that the slag bricks are high in water absorption saturability, rainwate