An in-depth analysis of the demand and potential for supplementing arable land during the land spatial planning period in Ji'nan city is of great significance for achieving regional sustainable development. From the aspects of natural resource conditions, location conditions and socio-economic conditions, an evaluation index system to assess the remediation potential of supplementary farmland in Ji;nan city has been constructed. The remediation difficulty is divided into relatively easy level, general level and difficult level, and corresponding remediation suggestions have been proposed. It will provide scientific basis for farmland protection and farmland occupation and compensation balance in Ji'nan city.