Abstract: Based upon the studies of Late Cenozoic faulting and its related features in connection with the data of seismological observations involving a part of focal mechanism, topographic changes and geophysical explorations of the deep portion of the earth, the principal characteristics of the Late Cenozoic tectonic stress field in the region studied are discussed in this paper. It is suggested that the Himalayan movement together with the underthrusting of the Pacific plate reformed the regional stress field -of North China from Late Mesozoic to Early Cenozoic. As a result, the horizontal NEE-SWW trending compression is predominant. The change of the principal compressional stress from NEE to SEE in direction indicates both the consistancy between the stress fields of the region under investigation and North China area and also the difference in their individual features. Presumably the collision of the dominating Indian plate with the Eurasian plate and the underthrusting against one another by compression of the Pacific plate, together with a NW running underthrusting of the Philippines Sea plate and the lateral spreading of the surface crust caused by the upwarping of the upper mantle were responsible for this complex situation.