Due to the different production material and process between real and counterfeit paper currency, we identified the true and counterfeit hundred RMB of the 2005 edition based on transmitted THz pulse imaging. The point-to-point terahertz pulse imaging technique was used to scan two feature anti-counterfeit area, white watermark and holographic safety margin. Based on the obtained time-domain data and the corresponding frequency-domain data, the THz images with time-domain display mode and frequency-domain display mode were mapped. The difference of imaging effect is obvious at white watermark area and safety line area, which confirm that the transmission terahertz pulse imaging technique can truly and effectively carry out multi-regional and multi-dimensional authenticating true and counterfeiting RMB.