This research is the study of essential oils from plant extracts three types of guava leaf, peppermint and eucalyptus. To eliminate mosquito larvae Aedes aegyti Linn. The experiments essential oils extracted from plants to eliminate larvae ages 3-4 at a concentration of 31.25 62.5 125 250 500 and 1000 ppm. In a period of 6, 12, and 18. 24 hours showed a mortality rate of larvae of the three species has concentrated 31.25 and 62.50, with a death rate less than 50 percent within 24 hours at concentrations ranging from 125-1000 ppm showed mortality rates. 50 percent and considering the speed that kills mosquito larvae within 6 hours after the trial of the three species has a mortality rate of more than 50 percent, except for the mint. With a mortality rate of more than 50 percent in the last 12-18 hours, guava leaves, mint and eucalyptus are the LC50 70.43 129.32 168.29 and the LC90 104.26 195.10 308.81 respectively, and the results showed that essential oils. guava leaves most effective in eliminating mosquito larvae, followed by the mint and eucalyptus in a 24-hour period, 6-effective way to get rid of mosquito larvae.