A certain amount of greenschists developed in marble of dam site of Jinping I Hydropower Station, it is bad for antisliding stability of dams. In order to quantitatively describe the development and law of greenschist in Jinping I Hydropower Station, geometry parameters about right abutment greenschists (EL.1885-1720m) were statistically analyzed by full trajectory method in this paper with site data and design plots, such as trace、connectivity and space. In the end, a proposal value about greenschist connectivity was attained; On this basis, with the data of geophysical exploration and sound wave ,further analysis of the influence to rock quality and antisliding stability in right abutment of the development of greenschist is done,which further more gives a necessary support to evaluate the stability of right abutment.