Abstract：One great meteorite crater was found in Cangshan region，Shandong Province，and main impact evidences are obtained from macroscopical geologic features，local region characters and so on. The crater¢s shape is approximately oblong whose remaining part has such radius as short axes and long axes1.3 km，2.5 km，respectively. After an extensive investigation，some important microcosmic evidences have been discovered. These evidences are achieved from lens-belowed identifying and chemical analysis of rock samples in laboratory. Using neutron activation analysis of apparatus and neutron activation analysis of radiation chemistry，some curves were charted that show how the contents of the elements Ni，Ir，Co，Sc and etc.，in the rock of the crater change with depth，and some dynamical structure characters and dynamically-metamorphosed phenomena are found. They include glass detritus structure，oolite-severed earmark in ash-stone，and assembled chipping macle extinction and the like. These evidences can forcedly explain the impact incident in Cangshan district.
