Abstract: The PAN-based hollow carbon fiber membranes and its pre-oxidized hollow fiber membranes prepared under different conditions as well as their morphology were investigated.It is found through experiments that drawing of the base membrane makes the pre-oxidized and carbon membranes compact,adding PMMA and polyimide(YJ-16) to the PAN based membrane can help to keep the finger-like pore structure of the hollow fiber membrane,thus obtaining pre-oxidized hollow PAN based membrane and hollow carbon fiber membrane with better morphology.