从南宋湖州的地理位置、军事地位、政治环境以及当时四川籍官员寓居湖州之多四个方面 ,分析秦九韶寓居湖州的原因 ,可以明确 :当时正值蒙古军侵犯南宋边境 ,四川战事频繁 ,生活难以安定 ;秦九韶的父亲好不容易从四川来到临安 (今杭州 ) ,再从临安被派往四川边境时 ,家眷难以在临安定居 ,便把他们留在临安的周边城市———平安而繁荣的湖州 ;秦九韶二次出川后来湖州是因为母亲在湖州。 From the four aspects of the geographical location, military status and political environment of Huzhou in Southern Song Dynasty, and the fact that Sichuan natives resided in Huzhou at that time, we can find out why Qin Jiu-shao resided in Huzhou. At that time, it was a time when the Mongol troops invaded the border of Southern Song Dynasty. Stability; Qin Jiushao father finally came to Lin’an (now Hangzhou) from Sichuan, Lin’an was sent to the Sichuan border, family members are difficult to settle in Lin’an, they left them in the surrounding city of Lin’an - safe and prosperous Huzhou ; Qin Jiu Shao second out of Sichuan later Huzhou because of his mother in Huzhou.