Abstract: [Objective][Method]4 Artemisia species along with railway line in sand dune areas were selected to investigate the seed weight, shape and germination characteristics to analyze the functional differences of reproductive strategies of Artemisia plants in special habitats and the roles in vegetation regeneration and evolution. [Result]The results showed that: Seeds of Artemisia gmelinii and A. sieversiana were rounder and heavier. Seed of A. lavandulaefolia was flatter and lighter. Seed of A. scoporia was small and round, which means that this species perhaps has the persistent soil seed bank. Seeds of 4 Artemisia species were rapid in the early stage and slow in the later stage. The germination duration of A. lavandulaefolia and A. gmelinii was long which had the mechanism of share survival risks. A. sieversiana and A. scoporia had the short germination duration and low germination percentage, while opportunism was the strategy of them. Canopy seed bank in sand dune areas along with the railway line played important roles in alleviating the impacts on seed availability and seedling recruitment, which made enlargement of population easier. [Conclusion]The special ecological function of canopy seed bank contributes to the vegetation restoration along with the railway line of sand dune areas.