TThis study was conducted to reduce the volume of solid wastes by using unmarketable potato tubers for producing biodegradable plastic films to be substitute oil based plastics “OBP" which is often not biodegradable. Starch based plastic films “SBP" were produced with different concentrations of glycerol (5, 10, 15, 20, 25, 30, 99.5%v/v) as a plasticizer. The physical properties of SBP including thickness, density, water absorption, biodegradability, were studied, as well as mechanical properties including tensile strength, modulus of elasticity, elongation % and the required energy for firm were also investigated compared with OBP samples. The results showed that the maximum value of extracted starch was 13.5% obtained by blending potato tubers. SBP films with elevated glycerol concentration increased the sample thickness but decreased its density. Glycerol 20% gave the best flexible compact structure SBP films. Average thickness and density SBP film (20% glycerol) were 0.25 mm and 80.11 Kg/m³ respectively. Meanwhile, the average thickness and density for OBP films were 0.41 mm and 24.39 Kg/m³ respectively. The rate of mass loss of SBP films with 20% glycerol concentration was 72% after 96 days while the rate of mass loss for OBP films is neglect able. Consumed energy for firm were 44.05 and 31.06 N. mm.