Character can not only affect living condition,marriage and family,but also affect inter-personal relationship,career development and so on,to some extent,character can determine success an failure,future and destiny of a person.Based on many factors affection character formation,this paper uses analytic hierarchy process to analyze all factors affecting the character formation,obtains the rank of all factors,whichcan further understand the formation of the character,and finallhy provides virtuous suggestions for amending the character defects.