Tropical Cyclone (TC) is an important tropical weather system that affects mainland China. Classification for tropical cyclone tracks is conducive to the study of its characteristics. This paper is based on the best track data from 1949 to 2016 (from June to November) provided by the Shanghai Typhoon Institute of, CMA. TCs affecting mainland China are classified into 4 clusters by K-means based on parameters such as centroids, life spans, steering and intensities. There is obvious distinction between clusters in tracks, life spans, seasonal patterns and landing frequency and regions. During the development of strong El Nino, the intensity and life span of each cluster of TC also increase in different degrees. In terms of the climatic trend, although each cluster shows different tendency in frequency, the single PDI are all in an ascending tendency since 1998, which may be attributed to the development of strong El Nino in recent years.