Abstract: A study about dissecting components in medicinal mask-cosmetics liquid was done. A better method has been established in which the solvent extraction and the combining a series of instruments analysis were applied. In a series of experiments, many extraction solvents were used for concentrating main component. When using ether for extracting and concentrating effect component, the pure degree of concentrating component of 99% was achieved. The dissecting-distinguishing of the concentrated component was be made by applying any analysis instruments including high performance liquid chromatography (HPLC), element analysis,mass-spectrum (MS) analysis, infrared spectrum (IR) analysis and so on. After a series of check, the main effect component in medicinal liquid being as chloramphenicol was exactly defined. The other components qualitative and quantitative were determined also. They are roxithromycin, dexamethasone,, propanediol,ethandiol,ethanol etc.