The Xujiashan stratabound antimony deposit occurs along the interstratal compressive fractured zone of silicified limestone in the carbonate rocks of Upper Sinian Doushantuo and Dengying Formation, The typomorphic study of stibnite from this deposit includes mode of occurrence, chemical composi- tion, physical properties, mineral inclusions and isotopic compositions of sulfur, oxygen and dispersed lead. The data obtained provide some information and typomorphic characteri- sties for the type of the deposit and the origin of stibnite. Relatively systematic data on chemical composition，trace element conte- nts, unit cell parameter, some physical properties and isotopic compositions of sulfur, oxygen and dispersed lead in stibnite from this deposit are given in this paper. our research on stibnite of metallogenic stage I and TI has yielded the following results; 1. The stibnite metallization might be divided into synsedirnentary metal- logenic period(I)and metallogenic period(II)of underground hydrothermal transformation and enrichment, and the latter czn be subdivided into four me- tallogenic stages, II1, II2，II3 and II4. 2. The stibnite contains rather high selenium and arsenic(Se=0.08-1.95% and As=0.078-0.118%). 3. The unit cell parameters of stibnite are given in Table 3. 4. Stibnites all have positive 8345 values (varying from+12.1 to+14.2%) and are characterized by the enrichment in heavy sulfur isotopes, Sulfur in the stibnite is derived from sedimentary sow-ces.