The invention discloses an energy-saving high-efficiency coffee bean baking machine. The energy-saving high-efficiency coffee bean baking machine comprises a base, wherein a baking machine body, a cooling disk and a tail gas box are mounted at the top end of the base; the baking machine body is located between the cooling disk and the tail gas box; an inner cylinder and a gas filtering plate are mounted in the baking machine body; the gas filtering plate is located below the inner cylinder; a thermal mixing cavity and a combustion cavity are separately formed in two sides of the gas filteringplate; a combustor is mounted in the combustion cavity; and a fuel gas pipe is connected between the combustion cavity and the base. According to the energy-saving high-efficiency coffee bean baking machine disclosed by the invention, an exhaust pipe, the tail gas box, a gas return pipe, the thermal mixing cavity, a fan, the gas filtering plate and the combustion cavity are arranged, when the baking machine operates, and fuel gas enters the baking machine body, the fuel gas is combusted through ignition of the combustor, so that expansion combustion is realized in the combustion cavity, and the temperature is quickly raised; after combustion, generated high-temperature gas penetrates through the gas filtering plate to enter the thermal mixing cavity, and then the high-temperature gas is guided to the inner cylinder through the fan to heat and bake coffee beans.