秃病蚤蒙冀亚种、光亮额蚤和原双蚤都是鼠疫媒介蚤。为了观察三种蚤对人的叮吸血能力，在实验室条件下进行了试验。结果表明，这三种蚤对人都有一定的叮吸血能力，秃病蚤蒙冀亚种吸血率最高，光亮额蚤居中，原双蚤最低。若把蚤固定于手臂，吸血率秃病蚤蒙冀亚种雌蚤为９２．３１％，雄蚤为９６．３６％；光亮额蚤雌蚤为６６．０７％，雄蚤为５９．２６％；原双蚤雌蚤为４．８４％，雄蚤为３．３０％。蚤类的这些习性，对把自然界中鼠疫菌传染给人具有一定意义 Baldly fleas Meng Ji Asian subspecies, light fleas and former fleas are plague vector flea. In order to observe the ability of three species of fleas to vomit blood, experiments were conducted under laboratory conditions. The results showed that all three species of fleas had a certain ability to vomit blood, and the highest rate of sucking blood was found in the endemic species of baldness flea, which was the lowest in the fleas. If the fleas fixed in the arm, the rate of sucking blood bald flea Meng Ji Asian subspecies of flea was 92.31%, 96.36% of the flea; flea flea was 66.07% flea, flea was 59.26% ; Former flea flea 4.84%, 3.30% of the flea. These habits of fleas, the nature of the Yersinia pestis infection to people of some significance