Abstract: OBJECTIVE To determine the main active parts of crude Pollen Typhae,parched Pollen Typhae and carbonized Pollen Typhae.METHOD Extraction was conducted according to different dissolvent heteropolarity and different chemical components and screening conducted with hemostatic time in mice as the index.RESULT The acetic ether portion,n-butanol portion and total flavonoids portion of Pollen Typhae could markedly shorten the coagulate time in mice.CONCLUSION It is preliminarily believed that the total flavonoids portion is the active part of the analgesic effect of crude Pollen Typhae.