Abstract:The method of agar plane has been used in examining the function of diffusing drugs of ointment scutellarein and aspirin of different bases. The results show that diffusing coefficient of emulsifying bases (O/W)is 3~5 times greater than that of water soluble bases. In only bases diffusion is not seen in 7 hour. The method of millionporoas-turning basket has been used in determining the diffusing degree of ointment scutellarein. The accumulating drug diffusing from the emulsifying bases (O/W) in 100 min approximates to that diffusing from the water soluble bases in 310min, loith T 50 for the former being 3min, while for the later 13.2 min.