The paper analyzes the role of explosive boiling of liquid phase on the process of foamed emulsion combustion. Combustible foamed emulsion represents a multiphase system consisting of oxygen bubbles and hydrocarbon drops dispersed in the water solution of stabilizer. A certain interest to study such systems is determined by the fact, that even at significant water content in the foam it preserves its combustibility. If the temperature in the combustion zone occurs to be higher than a certain critical level, then the defining role in the process of flame propagation will belong to the process of explosive boiling of liquid phase. Herewith the flame speed is determined not by the heat transfer or diffusion of active centers but by the intensity of explosive boiling. On the basis of phenomenological conception the criterion is derived for determination the conditions of explosive boiling of liquid phase of the foam. Foamed emulsion combustion is accompanied by its decay and water drops formation. The dependence of water drops size on the foam composition is obtained with the use of photography of combustion products multiphase flow. It is found out that the flame acceleration due to explosive boiling is accompanied with a decrease in water drops diameter that in turn favors the increase in the intensity of heat losses in the combustion zone and subsequently results in the flame deceleration. (C) 2017 Elsevier Ltd. All rights reserved.