Abstract: In order to improve the mechanization level of soybean and corn composite belt planting, a 2MBDYF-5 soybean and corn composite film planter is designed in this article, which integrates the operation functions of film laying, seed spotting, suppression, fertilization, soil covering and drip irrigation belt laying. According to the agronomic requirements of the soybean and corn strip composite planting mode in Gansu province, the overall design scheme of the soybean and corn composite film planter is proposed, and the key core components of the corn burrow planter seed picker and soybean burrow planter are innovated; and the field sowing experiment of the soybean and corn strip composite film planter is carried out in Tianqiao village, Huangyang Town. The test results show that the whole machine is stable and reliable, the seed damage rate is less than 0.1%, the hole rate of soybean is less than 2%, the hole rate of corn is less than 1%, the qualified rate of soybean grain distance is 100%, and the qualified rate of corn grain distance is 100%. All the performance indexes meet the agronomic requirements of local planting.