Abstract:Taking the mamian-bastions of Xiajiadian lower culture stone cities in the middle and lower reaches of Yin River as the object, based on the field research, combined with SPSS statistical analysis and GIS spatial analysis technology, this paper has investigated the classification of the mamianbastions and their relationship with the stone cities, and the main conclusions are as follows: 1) Based on differences in volume and spacing,the mamianbastions can be divided into four types, and each type has its corresponding morphological characteristics and construction methods. 2)The mamianbastions stone cities have three types of spatial distribution methods according to the direction of Yin River, which are point-like, line-like and group-like. 3)There is a certain correspondence between the selection of specific types of mamian-bastions for stone cities with different functions and attributes. This paper deepens the understanding of mamian-bastions, highlights their important role in ancient urban construction history, and provides a reference for comprehensively revealing the development and evolution process of prehistoric city defense.