The dissertation is to study the mechanical properties of biodegradable film leaves its little dogs. The extraction of the dog with adding glycerol. And chitosan with sodium green glycerol concentration of 25, by weight per gram of dry weight of the dog. The chitosan concentration used 2 percent by the forming a film used to test mechanical physical property, including permeability, water. The tensile strength, the elongation and the determination of moisture, we found that the film leaves little dog mix network glycerol can be molded. But if you compare the chitosan film blended biodiesel adjust for wind color forming better at high concentrations. Will contribute to make the film thickness increased. While the tensile strength and the elongation of the film increased significantly. The film leaves the dog mix glycerol film chitosan compound glycerol concentration 25 percent by weight per gram of dry weight of the dog. Chitosan film mixed with glycerol concentration 2 percent. It has made no permeability water.