A study was conducted to investigate the seasonal abundance of tabanid flies in Jeong-up, Jeonra Buk-do, using emergence traps, Manitoba traps and cow baiting traps. Periodical surveys were conducted from June to early September in 1974. The results obtained were as follows: 1. Seventeen species, including 4 unidentified tabanid flies, were found during the studied period. 2. Eleven species for the emergence traps, 13 species for the Manitoba traps and If species for the cow baiting traps, were captured. 3. The efficiency of the Manitoba trap was different with the colour, and the most efficient colourwas dark blue, followed by black. 4. The dominant species of the Tabanidae in the studied area was Tabanus amaenus followed by T. pallidiventris. 5. The peak of the activity for the flies was July and 43.5% of the total flies were caught.