Recent report have suggested that intrauterine device(IUD) users may have an increased likelihood of deloping salpingitis. In order to set a basis for comparison with those women wearing IUD, a study on the bacteriology and histology was performed with fallopian tubes obtained at the time of tubal ligation from 40 normal healthy women who have not used IUDs. The results obtained are summarized as follows. 1. The rate of bacteriological contamination of fallopian tube was 17.5% in normal women. 2. Microorganisms cultured from the fallopian tube of normal women were Staphylococcuus, Eubacterium , Bacterodies, Streptococcus, etc. Inclding Lactobacillus. 3. Twenty-eight percent of women were found to have histological evidence of salpingitis. 4. There seems to be no correlation between the positive bacterial culture of the fallopian tube and the histological evidence of salpintitis.