Abstract: Based on analyzing the traditional association rules algorithm,an improved association rules Data Mining Algorithm is presented in this paper. The advantages of presented algorithm are fast removing redundant rules and not by the frequent items,so it is suitable for the massive data mining based on association rules. In view of the current large number of college students admitted after the loss of the candidates,some college enrollment data was mined based on the proposed algorithm. The results show that the proposed algorithm can mine useful information and play an important role in college enrolling affairs.