防御和盛民是中国古代筑城最基本的作用,筑城与军事活动密切相关,体现着一个王朝的国家安全观。《明实录》是一部国家档案,从其对西南边疆云南筑城的记载,我们可以窥探出明朝的边疆安全观。明朝的边疆安全观主要体现在三个方面:地域初定军事筑城;外敌入侵筑城防御;地方族群叛乱适时改土归流,设卫筑城。本文拟通过对《明实录》中云南筑城的梳理,分析明朝的边疆安全观。 Defense and Sheng Min are the most basic functions of ancient Chinese city building. The construction of the city is closely related to the military activities and embodies the concept of a dynasty’s national security. The Record of Ming Dynasty is a national archives. From its records of Yunnan built in the southwestern frontier, we can have a glimpse of the Ming Dynasty’s frontier security concept. The frontier security concept of the Ming Dynasty is mainly reflected in three aspects: the initial military fortification of the region; the invasion of fortifications by foreign enemies; the defense of local ethnic groups in time to change the land and make the fortification city. This article intends to analyze the Ming Dynasty’s frontier security concept by combing Yunnan’s construction of cities in Ming Dynasty.