Based on a comparison of the monitoring results of land use dynamic monitoring in 2008 and in different periods of time in Tianjin, the authors have analyzed the differences between the results of annual monitoring and quarterly monitoring from the angles of time factor and human factor. The approaches to the problems as to how to effectively improve the two kinds of monitoring are discussed. Considering the limitation of the data source and the information extraction methods, this paper focuses on the analysis of the improvement and optimization of the results of quarterly monitoring of land use by using the remote sensing information extraction methods. The indirect and circular methods are used in this paper which can facilitate remote quarterly monitoring in a more efficient and targeted manner.