The utility model discloses a dual-purpose pen for writing and counting. A pen holder of the dual-purpose pen adopts a split-type structure, a writing end is at one end, and a counting end is at the other end. The writing end is a structure of a ball-point pen, a gel pen, a marking pen and the like, and has a writing function specially. The counting end is provided with a counter, a cartridge and the like, and has a counting function specially. The position of the counter is fixed, and a window is formed in the counting end of the pen holder and is used for displaying data of a digital display screen of the counter. A counting button of the counter is connected with the cartridge, a reset button is connected with a cylinder, a bulge is arranged on the cylinder, and a long strip-shaped groove is formed in the counting section of the pen holder correspondingly, so that the bulge is exposed out of the long strip-shaped groove and can move up and down. When the counting function is used, the counting button can be triggered as long as clicking a counting point with a pen point at the counting end, so that the figure on the digital display screen of the counter changes correspondingly; however, when the figure on the digital display screen of the counter needs to be returned to zero, the bulge inside the groove is dialed, so that the reset button is pushed by the cylinder.