The combined high-effective energy-saving pot stove belongs to the field of pot stove, water-heating furnace and rice-steaming tank combined design and manufacture technology. It consists of stove cavity and flue, and two vertical heat-conducting plates are placed on the bottom plate of the stove cavity. the upper portion of the vertical heat-conducting plate is equipped with central control heat-conducting plate, between the vertical plate and inner ring heat-conducting plate of the pot a slope heat-conducting plate is placed, and they are connected and made into the combustion chamber of the stove cavity and coal-adding opening. The water tanks placed respectively around the combustion chamber and in the periphery of the flue are communicated mutually, and this is favourable for absorbing waste heat produced around pot stove and periphery of flue. The bottom portion of the pot stove is equipped with two rice-steaming tanks which can be used for supporting pot stove, and can be communicated with exhaust pipe to cook rice.