The probability of Zhongnan University of Economics and Law becoming a preparatory party member is 100%. Generally speaking, there is no proportion limit for the development target to become a preparatory party member, and everyone can become a preparatory party member. The development goal is a link of party member's development. After more than one year's training, activists who join the party can be listed as development targets. After being listed as a development target, it finally became a preparatory party member after the training of development targets, political examination, departmental joint examination, inspection by higher-level party organizations, publicity and other links.