With the continuous accumulation of electronic information, from how these massive effective in extracting information of interest to users of knowledge of data mining has now become an important research topic, and clustering as an important tool for data mining, data will be passed divided into several categories , Made similar types of data, as far as possible, and similar types of data Degree as possible, so as to tap in to that category, the implied knowledge model, and become a hotspot. This paper summarizes the data mining in the clustering algorithm, for clustering in the existing problems were summarized, and the future of the prospect.