The invention discloses a high-performance carbon 
fiber pre-oxidation furnace which is specially designed for carrying out heat treatment on a high-performance carbon 
fiber material at a temperature below 350 DEG C. A furnace body is designed into a building 
block structure and is convenient to assemble and disassemble. For the design of the furnace, the requirements of a preparation process of the high-performance carbon 
fiber material are fully considered and understood and the key special requirements of the preparation process of the high-performance carbon fiber material are met to the greatest extent. According to the requirements of the preparation process of the material, a circulating hot 
air heating mode is adopted for the pre-oxidation furnace; for a circulating air traveling mode, air is blown to two ends of the furnace body from the middle of the furnace body; and a plurality of heat treatment cavities are connected in series and in parallel to form a 
system with a certain 
temperature gradient. An anticorrosion stainless steel structure is adopted for an inner 
hearth totally; a full-fiber superlight material is adopted as a heat insulating material to carry out heat insulation; a PLC (
Programmable Logic Controller) 
temperature control module is used for 
temperature control and has the characteristics of high 
temperature control accuracy, high temperature stability and the like; and according to the pre-oxidation furnace, in a pre-
oxidation process, the problems of low heat treatment efficiency, inaccurate temperature control and unideal temperature uniformity in the heat treatment cavities are solved, protofilament 
combustion is prevented, sufficient supplementation of the 
oxygen content in the 
hearth is realized and 
waste gas is reasonably discharged. The integral high-performance carbon fiber pre-oxidation furnace has relatively low 
energy consumption and is durable.