The Qaidam Block is located in the northeastern part of the Qinghai-Xizang Plateau, situated between the Qilian Block and the Songpan-Ganzi Block. The restoration of its paleogeography is very important for understanding the formation of the Qinghai-Xizang Plateau and the northern of China. However, the paleogeographic location of Qaidam block during Carboniferous period is still controversial. Paleomagnetism as one of the most effective methods for reconstructing the positions of ancient continental blocks, has played an irreplaceable role in the exploration of the Early Carboniferous paleogeographical location of Qaidam block. The results of rock magnetism experiments can provide foundational data for conducting systematic paleomagnetic studies, and their significance cannot be ignored. This paper selects sandstone samples from the Lower Carboniferous Chengqiangggou Formation in the Qaidam Block to conduct detailed rock magnetic experiments, petrographic experiments, as well as demagnetization experiments, to identify the type and characteristics of magnetic minerals in the Chengqianggou Formation sandstone. The results show that the main magnetic minerals in the sample from Chengqianggou Formation sandstone are Single-Domain (SD) and Multi- Domain (MD) hematite and magnetite. The demagnetization curves of some samples exhibit two-component behaviors, and the stable remanence direction of the high-temperature section can be effectively isolated. Combined with the results of petrographic experiments, it is concluded that the main magnetic minerals in the sandstone samples of the Chengqianggou Formation have the capability to record a stable primary remanence during its sedimentary period. Capable of conducting further research on tectonomagnetism.