Abstract: In order to promote the resource utilization of alien invasive species Eichhornia crassipes,we investigated the seed of Limonium sinense as the research object, using aqueous extract and press liquid of Eichhornia crassipes to treat the seeds of Limonium sinense. Related germination and growth indicator index of Limonium sinense were analyzed, in order to explore the effect of Eichhornia crassipes extract on the growth and development mechanism of Limonium sinense.The results showed that the germination percentage, germination potential, germination index, and vigor index increased first and then decreased with the increase of extract concentration, while the young root length showed a downward trend.The aqueous extract of Eichhornia crassipes had obvious inhibitory effect on the root length, underground biomass and seedling index of the seedling stage.however, in terms of press liquid, both showed inhibition comprehensive effect of allelopathic effect showed that the concentration of aqueous extract was 37.50 mg·mL^-1,which promoted the growth of Limonium sinense,inhibited at 50.00 mg·ml^-1,while Limonium sinense was restrained on treated by press liquid extracts.Therefore, the suitable concentration of aqueous extract of Eichhornia crassipes was beneficial to the overall growth of Limonium sinense,to achieve the purpose of the harmless utilization of Eichhornia crassipes,and the pressing liquid could not be directly applied to the early growth of Limonium sinense.