To provide a stove where black smoke is hard to occur, in a chimney installation type of stove which burns fuel such as wood, etc., within a furnace body.

This is a stove which is provided with a block cover 2 in the upper opening of a tubular furnace body 1 for burning cast-in fuel such as wood or the like, and the interior of this furnace body 1 is provided with a partition body 3 for partitioning the inner space of this furnace body 1 above and below, and the upper space part 4 over this furnace body 3 is provided with an exhaust part 5 which exhausts the air within this upper space part 4 to outside of the furnace 4. An under space part 6 under this partition body 3 is made in a combustion space 6A for fuel input, and a communication part 7 for connecting the upper space part 4 with the lower space part 6 is made in this partition body 3, and a catalyst 8 for burning the unburned gas produced in the under space part 6 is arranged in this communication part.