In this paper, the geochronology, Hf isotope and geochemistry of the monzonitic granites of the Shangliang area in the northern margin of Yangtze block are used to study the age, material source and tectonic environment. UPb dating of LAICPMS shows that the monzonitic granitoids were formed in the early Neoproterozoic (ca.909 ± 5 Ma). The Hf isotopes of the zircons show that the εHf(t) of the monzonitic granites is both positive and negative and varies widely from -6 to +34. tDM1 ranges from 1375 Ma to 1803 Ma, with an average value of 1522 Ma, whereas tDM2 varies from 1570 Ma to 2156 Ma with an average value of 1802 Ma. When εHf(t) is the minimum negative value of -60, tDM2 is 2156 Ma, Indicating that the source is mainly about 1800 Ma partial melting of the new crust, mixed with some ancient crust. Geochemistry shows that the monzogranite has high SiO2 content, with an average value of 7546%, suggesting it belongs to the subalkaline series with aluminum supersaturation（A/CNK=093～129）. Rare earth elements distribution shows LREE enrichment and trace elements primitive mantle spider diagram shows enrichment of LILE, obvious negative anomalies of Nb and Ta, and a similar spider curve to that of the upper crust. The discrimination diagram of the tectonic setting of the granite show that the granite falls into the arc granite region, suggesting that it should be the product of continental margin magmatic arc in the northern margin of the Yangtze plate.