中国古代城阙至迟到西周时期就已经出现, 根据其平面形制可分单阙、双阙和三出阙三种类型。城阙最初具有防卫功能。随着时间的发展, 春秋时期城阙已有等级上的区别, 成为标识身份的礼仪象征。 The ancient Chinese city queues have appeared as late as the Western Zhou Dynasty, according to their plane shape can be divided into single Que, double Que and three Que. Que initially had a defensive function. With the development of time, the difference between the rank of the castle in the Spring and Autumn Period has become the symbol of ceremonial identity.