Objective: To discover the connection between migraine and Tianmashouwu Tablet (TMT) in endothelial cell perspective. Methods: Serum containing TMT was added to rat's cerebral capilary endothelial cell's culture to observe the changes of NO and ET, and effect on express of ETmRNA and iNOSmRNA. Results: Levels of iNOSmRNA, rCMECs and ETmRNA were all downregulated, and contents of both NO and ET were decreased. Conclusions: TMT is effective in protection against rCMECs induced apoptosis, and has a therapeutic effect on migraine.