Abstract: The research concerns in the influence of peak shift related to temperature effect in the continuous radioactive aerosols monitor on the measured data. The tracking measurement of temperature and the data processing computer software technology were adopted in order to eliminate this influence. The method includes two approaches. The first part is calculating the channels offset by temperature, and the counts of every channel are corrected by software.The second part is tracing the peak shift of Po-214 which is daughter of Rn-220.,and the peaks of other artificial nuclides can be corrected according to the relative value of energy.