Abstract: Forest resource is often changed by the influence of human activities and natural damages. It is important to detect those change in time for forestry management planning. In China, the traditional way to obtain the change information of forest resource is carried out by means of "forest resource inventory and planning". There are several disadvantage within this means, for example, the period of re inventory is longer, the quality of sub compartment distribution map is poor, etc.. So we tried to find a good way to detect the forest resource change and to get finely result in order to update the forest data in time. In this paper, we introduced the study on detecting the forest resource change information and forest mapping using remote sensing and GIS techniques combined the conventionality way. First, the forest change area were identified from TM image and created a new sub compartment boundary map, then updating the old sub compartment boundary map using this new map. Second, updating the attribution database according to the sub compartment level field inventory data and the new sub compartment boundary map. Finally some comparison were made between the result of monitoring and the local field data, the accuracy is good. The study results showed this paper can be used as a working plan for further forest GIS development, where remote sensing is also utilized as a part of forest resource information management system.