This paper discusses the application of data mining algorithm of association rule in basketball match．The process includes two steps．The first iS data collection．Finding out the focal process of action transition improves the speed of data collection，meeting the deamand of the instantaneity of of data coleection．The second step iS that the apriori algorithm iS applied to find the association rules in the technical．tactics of the match to provide a scientific basis for coaches'guidance and decision．