Abstract: This paper presents methods based on parameterized feature modeling and assembling conjunction design on wheat precision seedmeter using three-dimensional feature modeling software Inventor. The technique essentials and keys to the seedmeter modeling and assembling conjunction design process were discussed, and dynamic simulation of assembling process and conjunctional producion of two-dimensional drawing were conducted. The efficiency of remodel-design and series-design was improved, the higher precision of design was insured. And a reference for the design of other mechanisms by Inventor was provided.