There are lots of handicaps and elders in the world. Many of them are not able to move as easily as normal people. It will be very useful if we develop an automatic wheelchair to help them moue more freely. In this paper we will propose a design of small-area automatic wheelchair to help handicaps OT elders be able to moue easily in a small area. The most concern in this project is low cost with acceptable performance rather than high velocity OT higrk accuracy. The design antegrates several technologies to apply on the wheelchair, including wireless positioning. automatic mobile technology: and wireless communication. On the oth,er hand, we propose a design that duplicable information can be computed on senier side, and information which is not duplicable can be computed in constant time. Therefore, our design of small-area automatic wheelchair can cost very low. W e will also propose a design of building map infonation to make the whole design more complete.