Subcollege nationality students refer to those who learn for one to two years before entering colleges. Based on the analysis of current situation of the subcollege nationality students in Southwest Nationalities＇ University, this paper analyzes the reasons to influence subcollege nationality students to improve their creative abilty and puts forward some ways to improve their creative ability from such aspects as the body and mind quality, the scientific and cultural quality, the ideological quality and the practising quality.