The compensation of collective land expropriation is the core issue of land expropriation system.At present,compensation of collective land expropriation in our country exist the problems such as unclear public interest,unreasonable compensation mechanism,as well as improper procedure and relief mechanism.Based on the comparative study of land expropriation compensation system in developed countries,the study gave its analysis and exploration on how to perfect the compensation system of collective land expropriation in our country in terms of substantive justice and procedural justice,to ensure that the farmers who lost their land get a fair and reasonable compensation,in order to provide enlightenment for the improvement of expropriation of collective land compensation system.