In order to investigate the effect of litter of the main afforestation species in Lanzhou on the germina‐ tion of seeds of the exotic plant Rhus typhina,a double‐layer filter paper culture method was used to test the germina‐ tion of R. typhina seeds by using the litters extracts of Robinia pseudoacacia、Sophora japonica、Ailanthus altissima、 Fraxinus chinensis、Populus alba and Salix bobylonica willow as allelochemical sources. The results showed that the leaching solution and its concentration of each species had significant effects on the germination of R. typhina seed‐ lings,With the increase of extraction concentration,the inhibition effect was increased. R. pseudoacacia and P. alba significantly inhibited the germination of R. typhina seedlings compared with other tree species. with the increase of leaching solution concentration. the inhibition effect on the seedling height growth of R. typhina was gradually in‐ creased,and P. alba inhibited the most obvious effect;while the root length showed a trend of low concentration The inhibition of root length was more pronounced in P. alba than in other species. The effect of the extracts of several species on the resistance physiological indexes of R. typhina seedlings at low concentrations was small and did not dif‐ fer significantly from the control,and as the concentration increased,the MDA content of R. typhina seedlings in‐ creased and the CAT,POD,SOD and soluble protein contents decreased,and the effect of the extracts of P. alba on the resistance physiological indexes of R. typhina seedlings was the most significant. Therefore,when introducing R. typhina in Lanzhou,we can choose R. pseudoacacia and P. alba to mix with them for ecological management and control to prevent their invasion.