Following the rapid economic development, more and more rural lands have been expropriated for a construction purpose, so the land compensation is paramount for those landless farmers. Although the uppermost price limit on land compensation has been canceled and the same-land-same-price is carried out gradually, big gaps exist compared to market price. This paper, based on a theoretical study and a case study, establishes a relation model to measure the prices in variable graded expropriated lands, compares with the existing land expropriation prices which is verified to be illogical, and presents some suggestions.