Effect of light intensity, light quality, seed soaking temperature, pH, salinity, metals and drought onFlaveria bidentis seeds germination rate were examined. The results showed that the germination rate was affectedlittle by light intensity and light quality. The germination percentage reduced as the soaking temperature rose. Noseed emerged when the pH value was lower than 6 or higher than 8. The germination rate decreased gradually withthe increasing of NaCl concentration, which was 43.77% when NaCl concentration was 0.20 mol/L. Fe²⁺ and Mn²⁺ re-duced the germination rate significantly, while Cu²⁺ and Zn²⁺ had strong inhabitation effect on the root growth of F. bidentis seedlings but did not change the germination percentage. The germination percentage reduced as the water os-mosis potential decreased. Cold treatment reduced the seed germination significantly. The inhabitation effect of her-bicides on seed germination of F. bidentis was in such order: paraquat ＞ acetochlor ＞ atrazine·acetochlor ＞ tribenu-ron methyl. In general, the germination of F. bidentis seeds could be affected by temperature, heavy metals, pH val-ue, NaCl, drought, cold and herbicides to some extent.