The present invention generates nitric oxide hwangchil with leaves enzyme inhibitors and protein expression relates to the extraction method more particularly, nitric oxide synthase (iNOS, inducible Nitric oxide synthase) expression inhibitory effect of the protein extract of the leaves or superior hwangchil hwangchil nitrogen oxide using hwangchil leaves consisting of fractions of leaf extracts enzyme protein expression inhibitors and to a method of manufacturing the same . ; 展开▼