Now many basketball coaches only rely on their experience and specialty Skill when they do the decision. So in this case the coach’s decision may be wrong and the team may lose the game. Even the coach may be fired. Concerning this problem, we can design this DSS (Decision Support System) to solve it. Here we use Data Warehouse and Data Mining skill to realize the DSS. And we use the assist data of Rockets players to experimental analysis. From the experimental results that frequent itemsets, we found the results were helpful for coaches on how to provide effective help. So we believe to some extent that the system can certainly provide some help and reference for the basketball coach.