Mossbauer spectroscopy was used in study paragenetic troilite and pyrrhotite from Panxi basic rock. The formula of troilite is Fe1.009S, and the unit cell parameters are 0=5.96A and c0=11.74A·The troilite studied is refered to LB, 2C type according to Wuensch method. The formula of paragenous pyrrhotite Mossbauer was determined to be Fe0.892S, belonging to hexagonal pyrrhotite. Mossbauer parameters of the paragenetic troilite and pyrrhotite were determined and the spectra of the troilite and pyrrhotite consist of one set of magnetic six lines and three sets of magnetic six lines, respectively. By comparing the troilite from Panxi basic rock with synthetic and meteoric troilite, it can be concluded that there are no significant differences among themo.