The invention discloses an anode roasting furnace belonging to the production field of carbon used for aluminum, in particular to a flame path partition device of an anode roasting furnace. The structure of the flame path partition device of the anode roasting furnace is as flows: a plurality of furnace face function holes are arranged on the channels of the intersection of cross walls and flame paths among a plurality of furnace chambers and between the two rows of location pulling bricks; isolation positions are arranged on the channels among the furnace chambers underneath the furnace face function holes; a plurality of pressure bladders are arranged in the isolation positions; and the pressure bladders are communicated with a plurality of charging connectors arranged in the function holes. The invention has the advantages of simple structure, less weight, easy operation when being installed and discharged, low operation cost, high product quality, energy saving and good sealability even if the isolation positions are distorted at the high temperature.