The montmorillonite-illite clay rocks Vere extensively deposited in transi- tional period between Permian and Triassic in south China. We have chosen 6 samples from the boundary clay rocks and apical and base plate of them at Guangyuan Sichuan province and Changxing Zhejiang province. We used neu trop activation analysis method to get results as follows: 1.The contents of Cs, Hf, Ta, Th, U, Zr in samples of boundary clay rocks are clearly higher than those in overlying and underlying strata of them. The ratio of Th/LT shows higher anomaly, but the ratio of Zr/Hf is low anomaly (See Table 1). 2.The property about the trace elements in samples of overlying and un- derlying strata is that the contents of Ba, Co, Cr, Ni, Sr are higher than those in boundary clay rocks (See Table 1). 3.REE date of samples from Zhejiang and Sichuan provinces are shown in table 2 and given in fig. 1-2 after average standardization chondrorites.The maximum values of ΣREE for boundary clay rocks at these two regions are 436 and 338 respectively. The ΣREE value of siliceous limestone in underlying stratum is very low as 43.3 and 47.4.And ΣREE value for mud-shale rocks in overlying stratum is 224 and 188 respectively. The similarity of the average REE pattern for boundary clay rocks and the overlying and underlying strata of them illustrates that the origin of REE at part of the origin is alike basi- cally. 4.Comparing the REE pattern with those of Permian subgreywacke and Triassic shale in same age in Australia (B. Nance 1976).It is clear that they are similar or nearly parallel. The value La/Yb is also similar. But Eu negative anomaly is more clear in China ( See Table 3 and Fig. 3 ). 5.Comparing with REE pattern of clay in American platform (L. A. Has- kin et al. 1966)，we can see that not only ΣREE but also the value of every single element as well as La/Yb, Sm/Eu value in China are 2-3 times higher than those in American platform (See Table 2 and Fig.4). As these conclusions above, they illustrate that the geochemical envi- ronment and the enrich conditions of rare earth elements are anomalous in China. May be this relates with geological events in the region, but now we do not know exactly. So that we think the Permian and Triassic is not con- formable contact, may be paraconformable contact.