Two new benzazepine alkaloids (1 and 2) were isolated from the whole plants of Thalictrum wangii. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies. Compounds 1 and 2 were tested for their anti-rotavirus activity. The results revealed that compounds 1 and 2 exhibited potent anti-rotavirus activity with TI values of 17.9 and 17.6, respectively. © 2021, Springer Science+Business Media, LLC, part of Springer Nature.