The utility model discloses a concrete structure formwork supporting component which is composed of a supporting component body and clamping grooves, the cross section of the supporting component bodyis of a square rectangular structure, and grooves are symmetrically formed in the left side and the right side of the supporting component body. And the distance between the groove and the end part is equal to the thickness of the protective layer. The device has the advantages of being simple in structure, easy to operate and capable of fundamentally solving the current situation that the thickness of concrete is uneven, improving the use strength and prolonging the service life.