A stylus includes a housing, a stylus body including a tip, a pen including a head, a first rotating member and a second rotating member. The first rotating member is coupled between the housing and the stylus body so the stylus body rotatably engages with the housing. The second rotating member is coupled between the housing and the pen so the pen rotatably engages with the housing. When the stylus body rotates relative to the housing, the tip moves from a first side of the first rotating member to a second side of the first rotating member opposite to the first side of the first rotating member; when the pen rotates relative to the housing, the head moves from a first side of the second rotating member to a second side of the second rotating member opposite to the first side of the second rotating member.