A vertical high temperature furnace with three homogeneous heating sections, for the purpose of reproducing the high temperature fixed point of Fe-C eutectic alloy, is mainly introduced in this paper. In addition, the structure of the furnace, the controllable temperature system, the sealing structure of cavity in the furnace, the water-cooling system and the gas-protecting system are represented in proper sequence. By analyzing the testing results of temperature field in the furnace, it shows that the present furnace can satisfy the anticipated needs of design, namely reproducing the high temperature fixed point of Fe-C eutectic alloy.