The Hongshan granite pluton is located in north Wushitala town, south of Tianshan Mountain, between Wuwamen-Gongbaizi and Xinge’er, the two huge regional fractures. The granite is composed mainly of monzonitic granites together with granodiorites. According to the comprehensive analysis of the geochemical characteristics, these granites most likely come from lower crustal materials in the stable garnet field with a significant proportion of biotie. Alkaline and high-K calc-alkaline andesite and basaltic andesite may be the most suitable source material. In combination with regional geological background and trace element diagrams of the tectonic settings, it is suggested that these high-K calc-alkaline granites were emplaced during the orogenic period of collision to post-collision when the compression environment is transformed to extension environment.