Abstract: At present, there are many methods for research on the in-situ stress field characteristics. However, all the methods are from a particular perspective to research the size or direction of the stress field. A systematic method system has not been developed yet. So based on the investigation and research of stress literature and the research on the in-situ stress field in western Sichuan, the research method system of the in-situ stress field is developed and summarized. In addition, the plane simulation of the in-situ stress field is developed taking the acoustic emission method and the fracturing method (HPF) as the calibrating “basis points” and the logging method (ADS) as the “line”, i.e., the integrated “point-line-point” research method system of the in-situ stress field characteristics. The method system has been applied to the research of the in-situ stress field in the gas reservoir of the Shaximiao Formation in the XM gas field of western Sichuan, and good results have been obtained. This can be a good reference to the further systematic research on the in-situ stress field and its application.