Abstract: Objective To study the attraction effect of the food attractants on Oncomelania hupensis. Methods Oncomelania snail food was prepared with the fermented kelp （Laminaria japonica） mixed with corn starch. Snails were fed with the food and kept for 12, 24, 36, and 48 h at 15, 25, 35 ℃ respectively. Meanwhile, snail-killing effect was tested by granules containing jack-in-the-pulpit （Arisaema heterophyllum） with or without the fermented kelp under the condition of 25 ℃， 30% or 60% soil humidity. Results The snail-attracting rate of the fermented kelp was affected by the temperature, highest under 25 ℃ and lowest under 35 ℃ at any time point, with a rate of 80.3% in 48 h at 25 ℃ which was higher than that of the control （17.0%） （P<0.01）. The snail mortality rate in the group using jack-in-the-pulpit with femented kelp （85.3%） was higher than that of the group without fermented kelp （26.8%） （P<0.05）. The mortality under 60% of soil humidity was higher than that under 30% humidity （P<0.01）. Conclusion The fermented kelp shows a strong luring effect to the Oncomelania snails.

Key words: Oncomelania hupensis, Laminaria japonica, Food attractant, Molluscicide