Abstract: A method for preparing 137Cs-Pollucite with HY-type zeolite is described. The volatility of Cs at high temperature depends on the temperature at which Cs compounds are prepared, the kind of Cs salts, Na ion content in the zeolite, etc. The crystal lattice structure of the prepared compounds is basically the same as that of naturally occuring Pollucite. The leaching rate of the Cs ion of the Cs-Pollucite at room temperature depends on the temperature used for preparation, leachant renewal periods, the kind of cesium salts, the leaching medium, the quantity of sodium ion during preparation, etc.