a touch panel next a cap 94 for protecting the tip unit 90 is detachably mounted on the touch pen unit 80 a connection string 96 for connecting the touch input device to a display device having a touch panel is fixed to the cap 94 if the touch input device constructed as described above in accordance with one embodiment is sought to be used in a capacitance method touch panel when the touch pen unit 80 is separated from the body 10 and the press button 84 is pressed the brush 30 is drawn outside the body 10 as shown in fig1 next when the press button 84 is pressed again the brush 30 is led into the body 10 and is not externally exposed as shown in fig2 furthermore if the touch input device in accordance with one embodiment is sought to be used in a resistive film method touch panel when the cap 94 is separated from the touch pen unit 80 as shown in fig3 the tip unit 90 of the touch pen unit 80 is externally exposed and the tip unit 90 touches the resistive film method touch panel the touch input device in accordance with one embodiment of the present invention can be used conveniently because it can be used both in a resistive film method and a capacitance method touch panel by using one touch input device furthermore there are advantages in that the brush can be protected because the brush is drawn outside the body only when he brush draw unit is included and.