1　开敞与封闭建立组团及组团单元 ,是近几年来居住区规划设计与改造的一个主要做法。表现为对居住区一定程度和范围的围合 ,这种做法对组团识别、行政管理以及控制车流、安全因素等有一定好处。合理的封闭与开敞对各方面是有利的 ,但利与弊总是相辅相承 ,由此产生的一些问题也 1 Opening and Closure The establishment of a group tour and delegation tour is a major approach to the planning, design and renovation of residential areas in recent years. The performance of the residential area to a certain extent and scope of the enclosure, this approach to identify groups, administrative management and control of traffic, safety factors have some benefits. Reasonable closure and opening are beneficial in all aspects, but the advantages and disadvantages always complement each other, resulting in some problems