In order to achieve light and simplified precision seeding for rapeseed, the hillseeding centralized metering device was carried out. According to the mechanical and physical properties, and precision seeding requirements of rapeseed, the involutetype modelhole which could contain 1~3 seeds was designed by using empirical equations. The main structural parameters of involutetype modelhole and hillseeding wheel were determined. Effects of modelhole structure on seed feeding performance were investigated by using the EDEM simulation approach and using EDEM software. It was found that the involutetype modelhole was helpful for seed filling, and each modelhole was filled with one or two seeds for modelhole’s length of 3.5mm, the type Ⅱ modelhole and modelhole’s depth of 2.6mm. The consistency of seeding’s time improved through the seed guard belt and the hill diameter was lower while the gap between guard belt and seeding wheel was 0.2mm. The bench test results showed that seed varieties, rotational speed of metering wheel and their interaction had significant effects on the qualified rate of seeding. The qualified rate of seeding was increased first and then decreased with the increase of rotational speed. When rotational speed was 20~40r/min, the qualified rate of seeding was larger than 94% with 1~3 seeds in each modelhole, and the variation coefficient of hill spacing was less than 12%. The standard error of the seeds’ number of 50 hills was within 10, and the variation coefficient of uniformity of seeds’ quantity was less than 100%. The field experiment results showed that the average seedlings per hill was 2.05, which can realize adjustment of precision seeding for rapeseed. The seed hillseeding device could ensure the performance of filling and protecting seeds, and realize six rows of hillforming seeding. This research can provide basis for structural design of hillseeding centralized metering device and precision hillforming seed sowing for rapeseed. 