The ophiolites of east Qinling are mainly distributed within a narrow zone lying along the southern fringe of east Qinling and to the north of Shangnan-Danfeng fault zone, winding nearly latitudinally as a discontinuous belt. The ophiolites in Shangnan一anfeng area make up an important and typical component part of this belt. This paper deals emphatically with the genetic mineralogical characteristics of amphibole, an important rock-forming mineral extensively-distributed in ophio- lites of Shangnan-Danfeng area, including its main characteristic components,trace elements, lattice cell parameters and cationic occupancy. On such a basis,it is demonstrated that (1) the amphibole in the ophiolites is a product of regional orthometamorphism, (2) the material sources thus formed show consanguinity,and the original rocks are ultramafic-mafic magmatic rocks and volcanic lava, and (3) being under basically identical thermodynamic condition, the metamorphism belongs to epidote-amphibolite facies or amphibolite facies, with the metamorphic temperature being 610℃ or so and pressure higher than .5× 108 Pa. In addition, the similarity in genetic mineralogical characteristics between various amphiboles from ophiolites of Shangnan-Danfeng area suggests that the ophiolite zone of east Qinling is the metamorphic belt of a tectonic margin resuping from the subduction and collision of North China plate and Yangtze plate.