On the basis of the present situation of industrial precision seedling-machine equipment at home and abroad, analyzed the existing problem in the application of industrial seedling and put forward the available countermeasure.

The seed discharging mechanism for seeding-tray precision seeding device with Brush Wheel is designed,composed with seed pitching apparatus and drive gearing .

In order to meet the modernization industrial seeding for vegetables and the development need of many automatically equipments,a directional precision seeding mechanism for big seeds,making the long axis direction of pumpkins keep in consistent,has been designed,providing the protection for the cotyledons direction of the entire seedlings keep in consistent.

The paper deals with the advantages and the importance of the corn precision seeding technology through analysis of some tests; it also expounds the key technology in the process of the machinery precision seeding.