A cursor control device adapted for controlling a cursor on a display screen of an electronic device, comprising: a circuit module holder, said circuit module holder having an accommodation space defined therein and an opening on a top side thereof for exposing said accommodation space; a sleeve mounted around said circuit module holder and movable leftwards and rightwards relative to said circuit module holder and rotatable forwards and backwards around said circuit module holder; and a circuit module accommodated in said accommodation space of said circuit module holder, said circuit module comprising a circuit board, a sensor module installed in said circuit board and disposed corresponding to the opening of the circuit module holder for sensing the direction and amount of movement of said sleeve relative to said circuit module holder through said opening and producing a signal indicative of the direction and amount of movement of said sleeve relative to said circuit module holder, a microprocessor installed in said circuit board and electrically connected with said sensor module for receiving the signal produced by said sensor module and producing a control signal for controlling said cursor on said display screen subject to the signal received from said sensor module, characterized in that said circuit module further comprises a control switch electrically connected with said microprocessor, wherein said control switch is disposed inside said circuit module holder, installed in said circuit board, and movable downwards to urge against an inner wall of said circuit module holder when said sleeve is pressed by a user so as to produce a triggering signal. a circuit module holder, said circuit module holder having an accommodation space defined therein and an opening on a top side thereof for exposing said accommodation space; a sleeve mounted around said circuit module holder and movable leftwards and rightwards relative to said circuit module holder and rotatable forwards and backwards around said circuit module holder; and a circuit module accommodated in said accommodation space of said circuit module holder, said circuit module comprising a circuit board, a sensor module installed in said circuit board and disposed corresponding to the opening of the circuit module holder for sensing the direction and amount of movement of said sleeve relative to said circuit module holder through said opening and producing a signal indicative of the direction and amount of movement of said sleeve relative to said circuit module holder, a microprocessor installed in said circuit board and electrically connected with said sensor module for receiving the signal produced by said sensor module and producing a control signal for controlling said cursor on said display screen subject to the signal received from said sensor module, characterized in that said circuit module further comprises a control switch electrically connected with said microprocessor, wherein said control switch is disposed inside said circuit module holder, installed in said circuit board, and movable downwards to urge against an inner wall of said circuit module holder when said sleeve is pressed by a user so as to produce a triggering signal.