The present invention relates to a TV set compatible with VGA signal and displaying said signal, and is characterized by that said invention ingeniously uses the control processing circuit of original system and adopts same set of processing circuits to process VGA signal and general TV signal, so that circuit design is simple, only uses two blocks of integrated circuit and small quantity of separate elements so as to implement the function which can be implemented by using large quantity of complex elements and devices previously, raise integral quality of product, reduce production cost andraise working reliability of whole machine.