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Our school is called Lycée Jacques Rabemananjara,it is located in the eastern part of Madagascar ,in the city of Toamasina..Considering the fact that malaria kills children and adults every year in our region .We have chosen two malaria sites to determine the factors that cause the larval proliferation, since 2012 and we have taken actions to reduce this proliferation in order to take part in the national fight against malaria. We hypothesize “During the hot period and at high temperature there is an intense proliferation of mosquito larvae if the place was predatory or less. And when the temperature decreases the proliferation of the larvae also decreases ” But also, all actions against malaria will reduce larval proliferation and will be a commitment for social development” To test these hypotheses we conducted two larval sampling in 2 different places (Figure 1-3) and awareness rising in different ways (photos A - H). According to these graphs, in both bamboo and stagnant water, the high temperature (29 in March 2012 ) causes larval proliferation, but it is more intense in bamboo(92 in 2012°)because of the absence predators. But when the temperature decreases (27 ° in 2012) the larval proliferation also decreases (39/ l in April 2012) with or without predators. In addition it was noted that the number of predators is inversely proportional to the temperature (March 2012 to April 26, 2012). We can conclude that the proliferation of mosquito larvae depends on the temperature and the absence of predators. Thus to eliminate the breeding huts we carried out intense awareness raising for students, families and neighborhood as well as the community at any time, during special or world environment days. Then we recycled these breeding places so that they have a second useful life for us and the community .