A　feature　extraction　of　edible　oil　FTIR　based　on　fractal　geometry　is　proposed　and　theoretical　calculation　formulas　of　fractal　dimension　are　introduced　in　this　paper.　The　calculation　method　of　box-counting　dimension　based　on　FTIR　is　analyzed.　Through　the　comparison　of　FTIR　fractal　dimensions,　the　different　spectral　could　be　distinguished.　Based　on　the　open　source　computer　vision　library　OpenCV,　the　FTIR　of　edible　vegetable　oils　fractal　dimension　calculation　algorithm　has　been　finished.　Taking　the　corn　and　sesame　oil　as　examples.　The　detecting　result　indicates　that　the　FTIR　of　corn　oil　and　sesame　oil　can　be　discriminated　effectively　by　the　difference　of　box-counting　dimension.