The present invention relates to a pharmaceutical composition of Micafungin or the salts thereof. The composition uses polysaccharide or monosaccharide or the mixture of them as excipient and may contain appropriate pH adjusting agent. The pharmaceutical composition according to the present invention has superior stability and potential safety than the formulations in the art.本發明公開了一種米卡芬淨或其鹽的醫藥組成物,該組成物以多醣或單糖或其混合物為賦形劑,並可含有適量pH調節劑。本發明提供的醫藥組成物穩定性和潛在安全性優於現有製劑。