Abstract
Investigation was carried out on 48 different kinds of herb medicine in China and Japan for the purpose of isolating mite infestation. Fourteen families, 20 genera and 37 species, totaling 265 individuals of mites were isolated from 30 kinds of herb medicine in China. Among them, 16 species of Prostigmata and 14 species of Astigmata mites were obtained in the greatest numbers. Tarsonemus granarius was the dominant Prostigmata-species both in China and Japan. Haplochthonius simplex, Chryptostigmata, which is a household species, was abundantly obtained from Japanese samples. From the species composition obtained, it might be deduced that mite infestation of Chinese herb medicine occurs in storage houses.