A tape dispenser comprises a housing, which is constructed from a first and a second housing pieces. The housing has a first aperture and a second aperture. A tape seat has a base wall and two side walls. A tape wheel is installed in between the side walls for free rotating. A second roller is pivoted at front side of the base wall. The tape seat is detachably installed to the housing for a third aperture formed at between the end of the base wall and the housing. A coupler link is received in the housing with the midsection thereof pivoted to the housing. A press member is received in the housing for displacing within a predetermined distance, which has a part extending out of the housing via the first aperture and has an end pivoted to an end of the coupler link. A cutter is received in the housing for displacing within a predetermined distance, which has an end thereof pivoted to the second segment of the coupler link, and elastic member has an end being against the housing and the other end being against the press member. User presses the press member can drive the cutter extending out of the housing via the second aperture.