The invention provides a rigid centering device. The rigid centering device is applied to a casing pipe, and comprises a barrel, centering strips and rotary wheels, wherein the barrel is in a hollow shape, the centering strips are arranged on the barrel in the axial direction, the rotary wheels are rotatably fixed to the interiors of the centering strips through rotary shafts, and the side walls of the rotary wheels penetrate through the side wall of the barrel. According to the rigid centering device, frictional force between rotation of the centering device and the well wall is reduced, therotating friction resistance of the casing pipe is greatly reduced, the casing pipe rotating function in the casing pipe tripping-in and well cementing processes is achieved, the casing pipe rotatingresistance is effectively reduced, a torque when the casing pipe rotates is reduced, normal rotation of the casing pipe is ensured, a screw thread of the casing pipe is protected, and meanwhile casingpipe rotation is prevented; and the centering degree of the casing pipe is ensured, implementation of a technology of rotary casing pipe well cementing and rotary tail pipe well cementing can be ensured, rotation of the casing pipe in the casing pipe tripping-in process can be ensured, and sticking of the casing pipe is prevented.