Abstract: The Changle-Nan'ao fault is an important tectonic zone with s trongly Late Mesozoic granitic magmatism and metamorphism-ductil e shear deformation in the coastal region of Southeastern China. All Pre-Late Cretaceous se dim entary rocks, volcanic and volcanoclastic rocks and Late Cretaceous CA -type hor nblende biotite granite and granodiorite were matamorphosed and deformed to form various amphibolite-facies metamorphic rocks and quartz -feldspar-facies duct ile sheared rocks characterized by penetrative fabrics that are developed well i n the wallrocks and granitc rocks. In this zone, a NE striking sheared foliatio ns are subvertical, strech ing lineations are subhorizontal, and non-coaxial ductile de formed fabrics occu r widespreadly. Kinematic study suggests that this is a sinistral strike -slip d uctile shear zone with slip-down component partly; Late motion sense of dextral strike-slip ductile shear exists locally. Granitic bodie s are distribut ed in the central part of the fault zone. From the center of shear zone to the o uter part, metamorphic grade decreases from amphibolite facies gneiss to greenschist facies phyllite and slate; metamorphic minerals change from sillima nite to garnet, mica and sericite. Mylonization and ductile shear fabrics are al so weakened from the center of ductile shear zone or of granitic body to the ou ter parts. Many small-scale ductile deformed zones were found in the Changle-Nan'ao zone. Single deformed zones have a wi dth from several meters to dozens meters. Asymmetric ductile shear criteria that can be used to distinguish a sense of shear include σ-type asymmetric porphyro clastic system, feldspar or quartz augen structure, fish-tails of mica, S-C comp osite foliation, dynamical recrystallized quartz aggregates in an oblique direct ion and fibrous chlorite pressure shadows around a large pyrite, and so on. Thi s paper proposes that this zone was a high temperature domain provided by shear heating, and ductile deformed fabrics were formed syntectonically during emp lace ment of granitic magma, which provided the heat for metamorphism. This is confirmed by occurrence of most high temperature minerals near granitoids, and the metamorphism and deformation in wall rocks away from granitic bodies becomes weaker gradually. Ductile deformation took place in t he interval of 100～120 Ma and at the depth of middle crust. Metamorphism, mylon itization and granitic magmatism resulted from a Late Mesozoic collision of Paci fic oceanic plate that subducted toward the continental margins of Eastern Asia along the Japan ese Central Tectonic Line to the longitudinal valley zone in Taiwan. Three phase s of granitic magmatism can be recognized in the zone: the subduction-type or CA-type gra nitoids with low-K2O content about 160～180 Ma, the strike-slip-type foliated and mylo nitized granitoids about 100～120 Ma, and the A-type or exte nsional type granite accompanied by magma mixing or basaltic magma underplating.