The size of a neighbourhood is governed by the followings: 1. The area required for all its land use components. 2. The population required to support necessary community facilities. 3. The accessibility of such facilities. It is assumed, however, that the necessary community facilities can be served by a primary school. And so, there is a general agreement that the minimum planning unit is the neighbourhood, and that for planning purposes the extent of the neighbourhood will be determined by the attendance area of a primary school. In this report the author reserched the existing attendance areas of primary school in urban areas, and studied the problems in improvement of the attendance area to the neighbourhood unit according to its charactors.