The invention discloses a method for recovering fluorine resource from fluorination residues of feed phosphate. According to the method, enriched fluorine compounds in the fluorination residues produced during feed phosphate production is subjected to acid dissolution to remove the calcium compounds in the fluorination residues, and after the fluorine resources enter liquid phase from solid phase, a precipitator is added to recover the fluorine resources, so that the fluorine resources discarded in the prior art are completely utilized, the economic benefit of the production is increased, the resource waste is decreased, the exploitation of fluorite resources is saved, the economic benefit and social benefit of the feed phosphate production are improved, and the chemical production requirements of sustainable development are met; meanwhile, a continuous cyclic process is adopted, so that the processing efficiency is greatly improved and the processing cost is reduced.