Abstract: When process the massive data,there exists a calculation bottleneck in current data mining system based on single node. To solve these problems, proposed a cloud-computing technology-based data mining method.That is, the large data and mining tasks will be decomposed on multiple computers and be processed by parallel.We use open source project-Hadoop to establish a parallel data mining platform based on Apriori with MapReduce technology. It has been verified the effectiveness of system by data mining job of carte menu in catering industry.Experimental results show that, using cloud-computing technology to process large data in the cluster can significantly improve the efficiency of data mining.