Calamity of the Jinq-Kanq, Sung's people moved to the south area, the internal disorder and foreign invasions were pressed from all sides. Outside had a threatening from Jin and puppet regime and inside the centralization of authority was collapsed, that was emphatic without and despicable within. The circum-stance was pressed from all sides which facing inside and outside, whether did the Jaw-Sung dynasty lifeline to continue again that looked steadily Gau-Tzong who could whether cope with critical situation or not, and He used a stratagem the ”To maintain internal security and to expel foreign invasion”. The stratagem that melted Jiu's threatening in the external and rebuilt the centralization of authority. The emphasis of this article, it aims directly at the disturbed situation which was surrounded from domestic trouble and foreign invasion in the initial period when Sung's people moved to the south. To probe Gau-Tzong who how to push a valid stratagem the ”to maintain internal security and to expel foreign invasion” could turn peril into safety and built a resurgent aspect.