Scientific Drilling No.1 in the Lujiang-Zongyang basin is the pilot hole of Chinese Continental Scientific Drilling. The drilling with an end depth of 3008.29 m successfully reveals the internal geological structure of the Luzhong basin. This study carried out a systematic study of geochronology, petrology and geochemistry on the concealed intrusions in LZSD-01. LA-ICPMS zircon U-Pb dating yields the ages of 132.6±1.2 Ma and 133.28±0.4 Ma respectively for concealed syenite and monzonite, suggesting that they were the product of magmatic intrusion at the end of Zhuanqiao volcanic cyclic in this basin. Magmatic rocks are characterized by nearly saturated SiO2, high contents of Al2O3 and K2O, and low TiO2. The concealed intrusions of LZSD-01 also have relatively high LILEs such as Rb, K, Pb, but depleted HSFEs such as Nb, Ta and Ti, indicating that the intrusion should be shoshonitic rock. The Sr-Nd isotopic composition suggests that the primary magma of the concealed intrusions in the Qianpu area may derive from enriched mantel type-I. Elemental evolution trend shows that fractional crystallization of major minerals such as plagioclase, pyroxene and ilmenite may be the leading mechanism and concealed intrusions likely formed in the tectonic setting of intraplate extension.