Early Cretaceous felsic intrusions are widely exposed in the Sulu orogenic belt (SOB), eastern China. The Taolin granitic intrusion is an example of these intrusions and mainly comprises monzogranite, syenogranite, and granite. Here we present new geochronological and geochemical data for the intrusion. The ~130 Ma Taolin intrusion belongs to normal to fractioned I-type granite and is divided into two groups based on geochemical differences. Rocks in the Daxiezhuang and Malingzhan units belong to Group 1 and have relatively low SiO₂ (61.35–69.44 wt%), high Sr/Y ratios (26.04–60.18), low εHf(t) values (−27.2 to −21.4), and old T_DM2 ages (2541–2903 Ma). They also display weak to no negative Eu anomalies (Eu/Eu*=0.65–1.29). Rocks from the Shibu and Tiqiushan units belong to Group 2 and have relatively high SiO₂ (76.38–77.68 wt%), low Sr/Y ratios (0.61–12.38), high εHf(t) values (−24.3 to −17.2) and young T_DM2 ages (2271–2722 Ma). They have obviously negative Eu anomalies (Eu/Eu*=0.10–0.42). The partial melting of the Yangtze continental crust at different depths led to variable elemental and isotopic compositions of magma in Group 1 and Group 2. The SOB was in an extensional environment during the Early Cretaceous, which allowed the formation of felsic magmatic rocks with low Sr, Sr/Y, and Sr/CaO values. Early Cretaceous felsic magmatic rocks in the SOB were mainly sourced from the continental crust by crustal reworking. There are diverse rock types with variable geochemical features in the SOB, which is ascribed to the heterogeneity of the continental crust and the complex evolution of felsic magma.