We just carried out this study in order to obtain an appropriate information of the population of toxigenic fungi in crude drugs in seoul. Results of fungal examination on twenty-three kinds crude drugs were described in this report. In 21 crude drugs, colonies of fungi were possible to identify into 7 genera. Predominant genera of fungi in crude drugs were Aspergillus spp. $(14,;46.6\%)$, Scopulariospsis spp. $(7,;23.3\%)$, Penicillium spp., Rhizopus spp., Fusarium spp $(2,;6.6\%,;respectively)$ and Phoma sp., Chaetomium sp. $(1,; 3.3\%,;respectively)$. Mycotoxin producing fungi like Aspergillus spp., Penicillum spp., and Fusarium spp. were 18 colonies$(60\%)$, totally.