The invention discloses an efficient energy conservation and emission reduction circulating fluidized bed organic heat carrier boiler which comprises a body shell, a thermometer, a smoke pipe, a boiler barrel, a boiler hearth and a boiler body. A fuel inlet is installed in the right side of the body shell, the thermometer is installed on the surface of the body shell, a pressure meter is installed on the left side of the thermometer, and a base is installed below the body shell; the smoke pipe is installed on the left side of the body shell, a return pipe is installed below the smoke pipe, the boiler barrel is installed above the body shell, and a steam outlet is installed above the boiler barrel; a water adding opening is installed in the right side of the boiler barrel, the boiler hearth is installed inside the body shell, an air inlet is installed below the boiler hearth, and the boiler body is installed inside the boiler barrel. According to the efficient energy conservation and emission reduction circulating fluidized bed organic heat carrier boiler, a cyclone separator is installed, a large number of incompletely-burnt solid particles mixed in discharged smoke can be separated out and return into the boiler hearth again to be burnt, and fuel is sufficiently used.