有关城头山古城功能的认识学界存在两种观点:一为防洪,一为防御。本文对此进行了评析,否定了防洪论,支持防御说。同时提出立邦也是城头山古城的功能之一。 There are two kinds of viewpoints about the function of the ancient city of Chengtoushan: one is flood control and the other is defense. This article has carried on the appraisal, has denied the flood control theory, supports the defense saying. At the same time, it is also proposed that the state legislature is also one of the functions of the ancient city of Chengtoushan.