The transplanting technology of small seedlings under the flue-cured tobacco film is a mature tobacco transplanting technology, but the multiple agronomic links after the tobacco seedlings transplanting make the popularization of this technology greatly reduced. In view of the bottleneck problem of popularization and lack of equipment of this technology, combined with the requirements of tobacco planting, an integrated scheme of synchronous operation of multiple agronomy and ring is designed. The device is mainly composed of the overall support device, wheeled soil lifting device, soil covering device, seedling cutting device, on-mounted air compressor device, suppression device and plant distance control device. It has the technical advantages such as adjustable plant spacing and synchronous operation of seedling cutting and soil covering. Based on the elaboration of the overall structure and working principle, combined with the analysis of tobacco ridge structure and the requirements of soil covering, the structural parameters and operating parameters of the key components of the plant, such as seedling cutting device, soil covering device and plant spacing control device were determined. The results of the field experiment showed that the performance of the device was the best at the speed of 0.5 m/s, and the best value of the soil covering amount was 1.5 L, which met the agronomic requirements of tobacco planting. According to the accumulation error test data of the plant distance between the seedling cutting device and the soil covering device, the scatter plot was drawn and the straight line was fitted. By fitting the straight line results, when the accumulation error of the whole machine exceeds 5 cm, the working times are about 1 900 times, and the shortest travel distance is about 950 m, which meets the use requirements.