Abstarct: Azna-Aligoodarz granitoidic plutons located in part E of Lorestan and the north of Aligoodarz-Azna cities and include an area with 150 km2 by following geographical coordinate 49◦26' to 49◦47' eastern longitudes and 33◦23' to 33◦36' northern latitudes. This area belongs to Sanandaj- Sirjan structural zone. This plutons is manifested of include Gol-e- Zard, Darreh Bagh, Azna three plutons and in general they have NW- SE trend. Petrographical studies and field observations indicate that Azna-Aligoodarz granitoidic plutons include compositional range (granodiorite, granite, leucogranite, microdiorite).With respect to all of the geological evidence, the studied plutons has two compositional rock groups: 1- basic- intermediate (microdioritic diks) and 2- aside and more members (granodiorite, granite, leucogranite, turmalin bearing leucogranite, pegmatite). Presence of andalusiticxenocrysts and xenolithicandalusite bearing mextapelitic enclaves, silica (quartz fragments), mextasand¬¬stone and micaschistic enclaves. Aznagranitoidic pluton is more differentiated than the others. Gol-e-Zard pluton cut by a few microdioritic (or andesitic) dikes. Their host mextamorphic rocks cut with similar composition dikes. baxsed on field evidences, time differences between basic-intermediate and felsic plutons is not so high.The studied plutons has been emplaced in the middle Jurassic igneous rocks. Petrographical studies indicate that these rocks mainly composed of quartz, plagioclase, alkali feldespar, orthoclase and biotite (major minerals) and a little sphene, zircon, apatite, andalusite, tourmaline, garnet and silimanite (accessory minerals). These rocks show granular, myrmekitic, graphic and porphyroitic textures. With respect to field and perographical observations, basic-intermediate magmas (with gabbro to diorite compositions) have been emplaced into mextapelitic rocks (slate, phyllite, micaschist and garnet micaschist) and resulted in increase of temperature and producing widely contact mextamorphism, and then melting¬ of mextapelitic rocks. First andalusite hornfels and then sillimanitehornfels were produced, then by more increasing temperature and across the temperature melting boundary of mextapelites, granitic and granodioritic magmas are generated and after that, they ascend to higher levels in the upper crust. More differentiated members including pegmatites and leucogranites dikes, tourmaline veins and veinlets cut granitic-granodioritic rocks. Their emplacements are associated with low-extent contact mextamorphism up to cordierite hornfels. Geochemical diagrams for nomencultureing of igneous rocks confirm the lithological compositions and field observations (baxsed on petrography). Geochemical characteristics show that rocks of this pluton are high potassium calc- alkaline and peraluminous. The enrichment in LILE and depletion in HFSE reveal the S-type and mextaluminous nature of the magmatism's of continental arc granitoids (CAG).