Abstract: In order to study the infection of swine lungworm on swine in Hunan, pigs from 3 abattoirs were surveyed by experimental examination. The infection rates of swine lungworm from the different districts in the same year were compared and the result were A（5. 93%）＞B（4. 26%）＞C（4. 18%）. The results indicated infection of swine lungworm in pigs still existed in the area of Hunan.

Key words: pigs; swine lungworm; infection rate