Thcre are two grades of network-type texture in metamorphic peridotite from the Kuda ophiolite, Xinjiang, China. The first graduation consisls of coarse-grained olivine with plastic deformation fabrics , orthopyroxene and minor clinopyroxene and Cr-spinel. The second graduation consists of snlall minerals filling among the mineral grains of the first graduation. Four kinds of assemblagcs containing tremolite have been discovered in the second graduation,which were formed during mantle partial melting and mantle metasomatism of a highly depleted peridotite. The first graduation consisls of coarse-grained olivine with plastic deformation fabrics, orthopyroxene and minor clinopyroxene and Cr-spinel. The second graduation consists of of snlall Four kinds of assemblagcs containing tremolite have been discovered in the second graduation, which were formed during mantle partial melting and mantle metasomatism of a highly depleted peridotite.