De-dusting brush structure

De-dusting brush structure comprising a connecting body, a brush body fixedly connected with one end of the connecting body and a hollow adjustment member, the adjustment member having a profile similar to that of the connecting body, an inner diameter of the adjustment member being slightly larger than the outer diameter of the corresponding section of the connecting body, the adjustment member being fitted onto the connecting body to form an adjustable de-dusting brush, said de-dusting brush structure being characterized in that two opposite sides of the outer face of the connecting body are formed with ribs arranged from one end to the other end at equal intervals, an engaging flange being formed on outer circumference of the other end of the connecting body, an annular rib being formed on inner circumference of one end of the adjustment member, whereby after fitted onto the connecting body, the adjustment member is adjustably movable along the outer face of the connecting body and locatable without detaching from the connecting body.