A series of gelatin-konjac glucomannan composite films with different ratios of gelatin to konjac glucomannan were prepared,and the influence of gelatin on the mechanical properties and the moisture adsorption of the composite films and Transmittance of Composite Films was studied.The introduction of gelatin may improve the mechanical properties of the composite films,decrease the Moisture Sorption Ratio of the composite films. there is good compatibility between gelatin and konjac glucomannan molecular.