To provide a disposable pocket warmer for insecticide for mosquitoes utilizing pyrogenicity of the pocket warmer and a natural principle that the diffusion effect of an offensive odor and a smell increase according to elevation of temperature, safety in using for every man because the warmer is free from power source and fire and convenient to carry.

This disposable pocket warmer for insecticide for mosquitoes is obtained by filling a liquid insecticide into a container, sealing with a lid, storing the container in the disposable pocket warmer and then the pocket warmer is vacuum packed in a wrapping bag. Gripping outside of the disposable pocket warmer in using, and folding into two parts or destroying the container to make the contents of the pocket warmer in the package contact with the liquid insecticide and vaporizing the insecticide by utilizing the heat generation of the contained material.