Abstract: This paper presents the results of the investigation of the sorption behaviorof radioactive strontium and cesium on eight types of rock samples collectedfrom different areas in China. A batch technique was used for sorption and desorption measurements andthe sorption ability of rock is described by sorption ratio (R_d). The resultsshow that sorption ratios for strontium on all rock samples investigated are low(2--60) while those for cesium on different rock samples are various. Among therock samples studied, the shale from Sichuan and the basalt from Hebei showhigh sorption ratios for cesium (2.7×10~3 and 1.2×10~3 respectively).