The invention discloses a color regulating plate for a solid light source projector, wherein a fixing hole is arranged on the center of the color regulating plate; the plate is divided a blue light area, a green light area and a red light area along the circumferential direction; the blue light area is provided with a light filter capable of penetrating blue and red lights but reflecting green light, a green fluorescent powder layer, a substrate and a light filter capable of penetrating green light but reflecting blue and red lights, from an incidence side to an emergent side; the red light area is provided with the light filter capable of penetrating blue and green lights but reflecting red light, a red fluorescent powder layer, the substrate and the light filter capable of penetrating red light but reflecting blue and green lights, from incidence side to emergent side; and the blue light area comprises the substrate. The chromaticity of three basic color lights of the color regulating plate is matched by adjusting the opening circumferential angles in the blue light area, the green light area and the red light area after a solid light source and the red and green fluorescent powder layers are confirmed. The color regulating plate can generate blue, green and red three basic color lights. When the color regulating plate is used, the color regulating plate rotates at a fixed speed, the color picture having no flicker and no tail of moving objects can be observed, and the color regulating plate has the advantages of high light efficiency, low power consumption, long service life, safety, light and handy property, and the like.