The social security value of land includes four major items, namely, unemployment security, minimum living security value, old-age security value and medical security value. The non-agricultural construction land compensation substance produced in the process of social security is the land value of the market price, the farmers and urban residents, land value can be partial social security. To determine the process of land expropriation for non-agricultural construction reasonable compensation, we need to provide scientific standards. Through the calculation, Guangzhou ’ s current land compensation provide social security value of basic level, but due to the large regional land requisition compensation amount difference, the current land expropriation compensation is actually the coexistence of insufficient and transition compensation.