Background: The activated carbon sorption is often used to reduce the concentration of the exhaust gas. But the ability of sorption is limited. If the concentration is high

the radioactive pollution may take place at the surroundings of radon chamber. In addition

natural decay of radon takes a long time because of the long half-life of radon. Purpose: The aim is to solve the problem of radioactive pollution and reduce the radon concentration in the radon chamber in a short time. Methods: The aim is to put forward a disposal system to bring the exhaust gas to storage chamber and keep the exhaust gas in the storage chamber for some time then let out. Results: By this way

the radon concentration of radon chamber can be reduced in a short time and the radioactive pollution can be solved. Conclusion: The disposal system can achieve the expected goals. Abstract