The problem of changing the function of food agricultural land is a crucial and national problem so it needs special handling and protection. Land conversion will have an impact on environmental degradation, decreased rainwater holding capacity, and groundwater and air quality. The Constitution provides a guarantee of a good living environment. Article 28H paragraph (1) of the 1945 Constitution "Everyone has the right to live in physical and spiritual prosperity, to have a place to live, and to have a good and healthy living environment and the right to obtain health services." The aim of this research is to analyze the protection of land conversion for sustainable food agriculture from an Islamic perspective. The research method used is sociological juridical. The data used are primary data and secondary data. Data collection techniques through literature study and interviews collected data were analyzed qualitatively. The research results found that efforts to preserve the environment from an Islamic perspective take several steps, including reviving dead land, reforestation, not polluting water, and avoiding damage and maintaining natural balance. Caliph Umar bin Khatab's policy in the agricultural sector was through management of dead land, giving agricultural land to the community to cultivate and prioritizing public interests, development of agricultural infrastructure, kharaj (tax) policy and agricultural zakat. Protection of the conversion of agricultural land in Indonesia has not been able to realize ecological justice and Islamic values due to competition in land use between the agricultural sector and the non-agricultural sector.