The present invention discloses a means for utilizing the heat source with efficiency at least comprising: a container, which is settled at the center of said means; a sand, which is settled within said means and outside said container; a hot gas channel, which is interconnected with said container and is covered with said sand; a collecting casket, which is settled on the bottom of said container and is used to collect the ash of the charcoal; a casket chamber, which could allocate said collecting casket within; a storage room, which is sited below said casket chamber; a plurality of rolling wheels, which is sited on the bottom of said means that could make said means moving freely; said hot gas channel could be covered by means of the sand to avoid the heat dissipation of the heat inside the heat gas channel while keeping high temperature which could make use of the heat resource and thus achieves the effects of baking, temperature-maintenance, cover toast as well as warm-keeping on the same time.