This invention discloses a daub for building graphite bricks of furnace stacks, in which, the daub includes graphite, antioxidation agent, a binder, a solidifying agent to be mixed in proportion, thegraphite is 40-60%, antioxidation agent 1-5%, the binder 30-50% and solidifying agent 1-5%, since graphite has high heat conduction performance and wet angle with melt metal with melt metal is big under high temperature, the daub is good at heat conduction and fine in anti-corrosion and binds graphite bricks under different temperatures.