As the key technology of extracting remote sensing information, the classification of remote sensing images has always been the research focus in the field of remote sensing. The paper introduces the classification process and system of remote sensing images. According to the recent research status of domestic and international remote sensing classification methods, the new study dynamics of remote sensing classification, such as artificial neural networks, support vector machine, active learning and ensemble multi-classification, were introduced, providing references for the automatic and intelligent development of remote sensing images classification.