The core issue of mandatory auction is how to coordinate the interests conflict between the bidder and the third party.

At present,there is not correlative legislation on mandatory auction of real estate in our country,and the quality of mandatory auction has not a doubtless verdict.

The system of the mandatory auction is becoming an un-substituted part of the execution procedure.

The court compulsory auction is a kind of national judicial act,which has the property of "public remedy".

Is compulsory auction an act of public law or of private law?Does it differ from common commission auction?Different comprehension of compulsory execution will cause different legal compensation when the law court withdraws the commission.

Based on the effects of different characteristics of unified land purchase on the implementation of land purchase repertory system, this paper holds that following laws, the characteristic orientation of compulsory marketing not only guarantees the governmental dominance in implementing land purchase repertory system, but also accords with the objective pattern of Chinas economic reform.