Recently distribution of license plate has become one of the hot issues，the government started tolicense-plate lottery or license plate auction，but not achieve the ideal effect，and in monopoly market conditions could not buy the license plate and a series of complex problems. This article carried on the analysis and comparison of two kinds of policies，pointed out the advantages and disadvantages of various policy the improvement of license plates issued，and put forward the effective suggestions of supply of license plate，so as to achieve the optimal allocation of public resources.