More and more attention has been paid to geo-fluid research recently. Fluid inclusion, as the exclusive window for direct observing fluid process, has been proved one of the most powerful means in geo-fluid research field. As definite geological process always result from definite tectonic-hydrothermal event, so it will be undoubtedly very helpful to find a means to link definite geo-fluid process and definite tectonic-magmatic process together. FTP (fluid inclusion planes) is such an effective means. By studying the FIP, we can obtain important information concerning relation of fluid process to rock-forming and ore-forming process. FIP represents the Mode I cracks that occur in sets with predominant orientation perpendicular to the least principal compressive stress axis 3. They are the records of paleofluid now occurring as fluid inclusions in healing cracks of the rock minerals. FIP help us to get a better understanding for rock deformation, regional geological evolution relating to fluid process.