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The present application relates to the field of calcium fluoride content determination, and specifically discloses a method for detecting calcium fluoride content in fluorite ore containing calcium sulfate. The detection method comprises the following steps: S1 sample pretreatment; S2 sample residue leaching and dissolution: using aluminum chloride solution leaching method for dissolution; S3 determination of total calcium in sample residue: using EDTA titration method for determination; S4 determination of calcium amount introduced by calcium sulfate dissolution in sample residue; S5 calculation of calcium fluoride content: total calcium content in sample residue minus equivalent calcium content calculated from the content of sulfate, plus calcium fluoride dissolution correction coefficient, which is the calcium fluoride content in the sample. By implementing the present application, the problem of abnormal increase of calcium fluoride content in fluorite sample due to incomplete separation when the content of calcium sulfate is high is solved, and the problem of accurate measurement of calcium fluoride content in fluorite sample containing a large amount of calcium sulfate is effectively solved. The relative error of the detection result is reduced from 7%-350% of the existing method to less than 2%.