A pocket warmer able to give out odors is provided with a combustion unit and a placing stand assembled over the combustion unit for receiving aromatic substance or essential oil with an odor a user wants. Thus, when the combustion unit of the pocket warmer is heated, hot air produced will rise and carry out heating to the aromatic substance or the essential oil of the placing stand over the combustion unit, able to attain effects of keeping warm and giving out odors, and safe and practical in use.