The present utility model relates to a boiler circulating flowing machine, especially relates to a boiler combined the fast and the slow flowing circulating machine. It solves the serious worn of the prior fast flow circulating machine, and the too height of the boiler body and the low efficiency of the combustion in the low circulating machine and the large volume consumption of the de-sulfur agent. The solution provides a fast and slow combination flowing machine, it is parallel composed by the fast circulating components and slow circulating components, between the fast components combustion chamber and slow circulating components heating exchange area equips with a spacing wall, under the spacing wall equips a inner circulating gap from the slow circulating to the fast circulating, the fast and slow circulating blowing chambers are separated each other.