Asphalt mixture compaction is among the key technologies in asphalt pavement construction, but the effect of asphalt mixture mixing quality on mixture compaction performance is still unclear. This research aimed to develop an asphalt mixture compaction model by discrete element simulation and verify it by compaction degree. Asphalt mixture compaction process was simulated and the effect of asphalt mixture workability on the stress, migration law and void distribution properties of aggregate particles during compaction process was investigated. The obtained results showed that the developed asphalt mixture compaction model was reasonable and correct. The more uniform the asphalt mixture is mixed, the smaller the average force on the aggregates, the aggregate particle migration velocity, and the aggregate particle displacement during the compaction of the asphalt mixture. Under the same conditions, increasing the mixing temperature from 140℃ to 180℃ increased the average velocity of the aggregates in the asphalt mixture by 92 %. It also decreased the voids in the compacted mixture specimens. At the same time, under the action of edge effect, void distribution at the center of compacted specimen was small, void distribution around the specimen was high, and void distribution along specimen compaction force direction was also high.