Prefabricated flue pipe connecting assembly

The utility model relates to a prefabricated flue pipe connecting assembly which comprises a connector, the connector comprises a flue pipe connecting part, and the outer contour of the flue pipe connecting part corresponds to a pipe body of the inner wall of a flue pipe; the joint connecting part is a convex edge which is arranged on the side wall of the near end of the tube body and extends towards the periphery; and the aperture of the through hole in the flue pipe connecting part is gradually increased from the near end of the pipe body to the far end of the pipe body. Compared with the prior art, the flue pipe connector has the advantages that the connector comprises the flue pipe connecting portion and the connector connecting portion, the flue pipe connecting portion facilitates combination of the flue pipe connector and a traditional flue pipe, and new functions are added to the flue pipe; and 2, the aperture of the through hole of the connector is gradually increased from the near end of the pipe bod