Abstract: 80% of summer sowing millet is planted in dry land and has low and unstable yield. To solve this problem, the effect of furrow sowing beside plastic film covering micro-ridges on root growth and development and yield of millet are studied by randomized block design. The results showed that this new cultivation technique significantly promoted root growth and development and yield of millet, the total root length, total surface area, total volume, number of root tip and root diameter increased by 14.63%, 21.59%, 31.59%, 11.44% and 12.39%, respectively, compared with that of CK. The yield increased by 44.59%, the yield had significantly positive correlation with total root length, total surface area, total volume, number of root tip, root dry matter and root diameter, developed root system was the reason for yield increase under the cultivation technique of furrow sowing beside plastic film covering micro-ridges.