The short-term anomalous distribution of outgoing longwave radiation(OLR)obtained before the January 8,2022 Menyuan M_S6.9 earthquake in Qinghai Province was compared with the spatial distribution of the coseismic deformation of the Menyuan earthquake extracted by the post-earthquake InSAR technique. The results show that the pre-earthquake infrared radiation enhancement area is basically consistent with the InSAR coseismic rupture deformation area,and the expansion forms are basically similar(the coseismic rupture deformation area is distributed inside the infrared radiation anomaly area). In terms of the spatial distribution of OLR nationwide before the earthquake,only the area of Delingha-Xining-Wuwei has a dumbbell-shaped OLR thermal radiation enhancement area,which is distributed in the near west-east direction,and the spatial recognizability is high. The spatiotemporal evolution process of OLR anomalies follows the thermal anomaly law during rock stress loading and fracture,suggesting that the thermal anomaly changes are related to stress changes. The coseismic deformation extracted by InSAR is mainly located in the intersection of the Sunan-Qilian fault,the Toleshan fault and the Lenglongling fault. The InSAR coseismic deformation results reveal that the surface deformation is mainly in the horizontal direction,and the fault movement has typical strike-slip deformation characteristics. InSAR coseismic deformation results provide referenced geological entity monitoring evidence for infrared remote sensing to reflect seismic deformation,and verify that the radiation enhancement anomaly before the Menyuan earthquake is a remote sensing physical parameter reflection of changes in seismic tectonic stress intensity.