[Objective] The effects of silver-black double-color film mulching on the physical and chemical properties of soil and the growth and yield of cassava were studied in order to provide the theoretical and technical basis for the application of silver-black double-color film mulching on cassava.[Methods] The effects of silver-black double-color plastic film mulching, black plastic film mulching, white plastic film mulching and no plastic film mulching on soil physical and chemical properties and cassava yield were studied based on DPS 7.05 and Excel 2003.[Results] Compared with black film mulching, white mulching and no mulching, the water holding capacity by soil mulched with silver-black plastic film was increased by 18.34%, 15.49% and 49.95%, respectively; the solid volume ratio of soil decreased by 4.87%, 15.18% and 15.25%, respectively; the proportion of soil vapor phase increased by 2.24%, 2.43% and 8.13%; the proportion of soil liquid phase increased by 2.4%, 2.45% and 6.83%; and the content of soil available nitrogen increased by 20.94 mg/kg, 21.64 mg/kg and 27.22 mg/kg respectively. Similarly, the content of available phosphorus in soil increased by 18.19, 19.39 mg/kg and 41.29 mg/kg respectively; the content of available potassium in soil increased by 21.77, 22.30 mg/kg and 28.16 mg/kg respectively; and the root tuber yield of cassava increased by 10.49%, 17.75% and 30.93% respectively. The yield of starch increased by 11.18%, 19.55% and 34.70%, respectively.[Conclusion] Silver-black double-color plastic film mulching can significantly enhance soil water holding capacity, adjust the three-phase ratio of soil, improve soil physical and chemical properties, promote soil nutrient efficiency, increase soil available nutrient content, promote cassava growth, and increase cassava yield.