In this paper, the reflection and refraction phases of the earth crust and uppermost mantle in Jiangsu-Zhejiang region are proved by using the explosive data of this region recorded by some seismic stations in Jiangsu, Zhejiang, Anhui provinces etc. And its main earth crustal structure has been obtained by the generalized linear inversion method.
Finally, the results indicated that this region is multi-layer crustal structvre and its average thickness about 33km.