PURPOSE: To provide the natural touch of writing just like writing on paper, to prolong a service life and to prevent the damage of a writing face by forming the tip of a pen respectively from the specified ratio of nylon 6/6, polytetrafluoroethylene and carbon fibers. CONSTITUTION: A pen 20 for information input is provided with a tip 21 of the pen composed of the nylon 6/6 for 70%, polytetrafluoroethylene for 15% and carbon fibers for 15%. The tip 21 of the pen has a rod part 31 and a top end part 33, the rod part 31 is constituted so as to be linked with a main body 35 of the pen, and a tapered part 32 is formed while having gradient 34 at 12° to the rod part 35. Then, this pen is connected to a computer system and used for inputting data to the computer system. Thus, the pen for information input, with which the natural touch of writing just like writing on paper with a pencil can be provided, the service life is prolonged and the damage of the writing face is prevented, can be provided.