The structure of premixed flames,containing uniformly distributed volatile fuel particles,assuming heat loss from the walls,is analyzed.It is presumed that the fuel particles vaporize first to yield a gaseous fuel,which is oxidized in gas phase.The analysis is performed in the asymptotic limit,where the value of the characteristic Zeldovich number is large.The structure of the flame is presumed to consist of a preheat zone,reaction zone and convection zone.In all of these three zones,except reaction zone which is narrow,the heat loss term from walls is considered.The results represent the flame temperature and burning velocity gradients and show that with assuming heat loss,the flame temperature descends rapidly.The burning velocity is decreased in comparison with.