In this research, microporous and bicontinuous poly vinylidene fluoride(PVDF) hollow fiber membranes wereprepared via hybrid process of the thermally induced phase separation (TIPS) and stretching method. The mechanism of themembrane preparation is based on liquid-liquid phase separation. The final membranes have characteristic structures whichhave both bicontinuous and fibrillar morphology by applying the stretching method. They showed quite different structurewhen compared with the spherulitic or nodular structure from S/L TIPS and bicontinuous structure from L/L TIPS. At first,PVDF hollow fiber precursors were prepared via TIPS method using various kind of diluent mixtures. We used gamma-butyrolacton,dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP) as diluents. We could make hollowfiber membranes which had porous outer surface or dense outer surface by controling the parameters such as cooling conditions,PVDF concentration and the ratio of diluent mixtures. Finally, these hollow fiber were stretched at room temperatureand diluents were extracted by ethanol. Effects of the stretching ratio on the membrane morphology were investigated usingscanning electron microscope (SEM), and its effects on water flux, porosity, pore size, roughness and tensile strength wereexamined.