Objective: To investigate the influences of different concentrations and different seed soaking times of gibberellin on breaking dormancy and seedling growth of Pesudostellaria heterophylla. Method: The methods of ten gibberellin concentrations and five seed soaking times combined with lamination at low temperature to breaking dormancy of P. heterophylla were observed. Germination rate

germination energy

plant height

taproot length

fresh weight and dry weight were determined in different conditions. Result: Soaked in 500-600 mg·L-1gibberellin for 24 hours

then treated with lamination under-2-3℃ for 45 days

the germination rate was over 80%

in other different concentrations no obvious difference

but were significantly higher than control group. Soaked in 600 mg·L-1 gibberellin for 6 hours

then treated with lamination under -2-3℃ for 40 days

the germination rate reached 84.17%. In 600 mg·L-1gibberellin group fresh weight and dry weight were significantly higher than those in other soaking times and control group. There were no obvious difference in other different seed soaking times within groups

but were significantly higher than the control group. Conclusion: The seeds breaking dormancy time of P. heterophylla could be shortened with the method of soaked in 500-600 mg·L-1 gibberellin for 6 hours

then treated with lamination under -2-3℃.