The present invention discloses a solar concentration and reflection board in the field of solar thermal collecting devices. The shape of the reflection surface of the concentration and reflection board is a space curved surface, the transversal of the space curved surface is the symmetrical curve whose symmetrical axis is the perpendicular of the polar axis passing the polar point in the plane polar coordinate, the transversal at one side of the symmetrical axis is composed of more than three parabolas connected with each other in sequence, and each parabola corresponds to an optimum solar reflection value in a period of time. The unity thereof can achieve the best concentration effect and enhance the thermal efficiency; the present invention can be used as the concentration and reflection board for various nontracking solar thermal collecting devices, the concentration and reflection board in collector tubes, and the concentration and reflection board for nontracking solar ovens and so on.