With a view to increase utility of ethanol fractioned fish skin gelatin as a food source, effects of additives on physical properties of the gelatin were investigated. The physical properties such as gel strength, melting point. gelling point and viscosity of both ethanol-treated and untreated gelatins were improved by adding ferric ion, sugar and ethanol to the gelatin sot, but were deteriorated by the added sodium chloride and acids. Insignificant difference in effect of physical properties on additives such as sodium chloride sugar and ethanol between ethanol-treated and untreated gelatins were not observed. However, the effect of ferric ion and acids on the physical properties of ethanol-treated gelatin has a greater than that of untreated gelatin.