A portable computer with a position-adjustable keyboard is used to provide a comfortable typing environment. More space is laid out for accommodating the keyboard, and the act of opening the panel is used to move the keyboard position. An adjustment mechanism is installed around a rotation shaft of the portable computer. A first gear is mounted on and rotated simultaneously with the rotation shaft. A cylinder is positioned adjacent to the rotation shaft, and a second gear is mounted thereon. A wire, rolled around the cylinder, interconnects the position-adjustable keyboard and the cylinder. When the panel is unfolded, the first gear rotates with the panel, and drives the second gear. The wire, pulled by the cylinder, moves the position-adjustable keyboard to the desired position for comfortable typing.