Objectives：The Early Jurassic OIB-type basalts reported in this article are discovered in the Northern Himalayas belt, where there have been few reports of Early Jurassic volcanic magmatism so far. At the same time, due to the lack of systematic petrological, geochemical and chronological studies, the understanding of its nature is relatively vague, resulting in a large difference in the age of the （volcanic rock） strata, resulting in stratigraphic division, the eastern extension of the northern Himalayan stratigraphic division has been unresolved. And become the focus of long-term controversy. This article attempts to explore the genesis and tectonic background of OIB-type basalts in the Early Jurassic, and to provide basic data for understanding the early Jurassic tectonic evolution in the middle section of the Tethys Himalayas. Methods：On the basis of field investigation, according to the zircon U-Pb age, combined with geochemical characteristics. Results:The early Jurassic OIB-type basalts in Kuju are distributed at the eastern end of the Northern Himalayas. They are produced as interlayers in the lower layer of the Early Jurassic Pupuga Formation. The surrounding rocks are silty slate and mudstone. The LA-ICP-MS zircon U-Pb dating of a representative sample of basalt shows that the 206Pb/238U age of the 24 analysis points of zircon is 115.2~240.9 Ma, and the weighted average age of 206Pb/238U is 190.8 ± 1.2 Ma （n=16 , MSWD=3.6）, is the early Early Cretaceous, representing the crystallization age of magma. The geochemical characteristics show that the rock has the characteristics of low K2O, medium MgO and high TiO2, P2O5, TFeO, （La/Yb）N is 4.4~10.3, δEu=0.89~1.07, and it is rich in Rb, Ba, Th and other large ion philanthropists Elements and high-field-strength elements such as Nb, Ta, Zr, Hf, Ti, etc., are basalts with OIB-type geochemical characteristics in the background of continental margin rifts.OIB-type basalt in Kuju is related to the partial melting of garnet and spinel-bearing peridotite （Gt> Sp）, showing the imprint of lithospheric mantle material. Conclusions：The petrogenetic model can be explained as the product of decompression melting of upwelling asthenospheric materials and lithospheric mantle materials under the background of tension. This mantle plume or hot spot may be related to the early activity of Kerguelen hot spot, and the fractional crystallization of olivine and clinopyroxene occurred in the process of magma evolution, In the process of emplacement, it suffered a certain degree of contamination of the lower crust. The discovery of Early Jurassic Kuju OIB type basalts fills the record of Early Jurassic magmatic activity in the eastern part of the North Himalayan belt and provides basic data for understanding the early Jurassic tectonic evolution in the middle part of the Tethys Himalayan belt.