There are volumes of Hercynian granitoids of Hongliuhe area in eastern Tianshan Mountains, granitoid plutons,according to intrusive order from earlier to later,are Hexi,Hongliuhe,Hexi and Tianhu in. turn. The main rock types were plagiogranite,granodiorite,monzonitic granite. The petrography and geochemistry of Hex-izhan and Hongliuhe granites have the feature of S-type,and those of Hexi and Tianhu granites have the feature of I-type. The Hexi granites have the lowest rare earth elements,Eu postive abnormity and the feature of similar adakite, the others have higher rare earth elements, Eu negative abnormity. Compared with the ocean ridge granites(ORG),these granites have the enrichment of K2O,Rb,Ba,Th and Ce,and the dilution of Ta,Nb,Zr, Hf,,Y and Yb,the granites of Hexi,Hexizhan and Hongliuhe,Tianhu have the respectively characteristics of volcanic arc,syn-collision,post-collision. Hexi granites and other granites were derived from the part melting of ancient ocean slab and ancient continent crust materials. They formed the intracontinent orogenic process, and were related with the extrusion and extension of the crust and lithosphere in eastern Tianshan Mountains in later Hercynian.