在北宋抵御西夏进攻的环形军事防御体系中，大顺城居于十分重要的地位。通过实地考察和搜寻有关资料，基本掌握了大顺城的概况，为研究宋夏关系提供了十分重要的资料。 In the Northern Song Dynasty to defend the Xixia offensive circular military defense system, Dashuncheng lived in a very important position. Through the field investigation and the search of related information, it basically grasped the general situation of Dashuncheng and provided very important information for studying the relationship between Song and Xia.