The present invention provides hollow fiber membranes and a hollow fiber membrane module having the same included therein, which even when highly filled, can reduce the size of the module and simultaneously maintain a crimped state enabling a good flow of a dialysate or buffer in the module by an easy process, characterized in that the hollow fiber membrane is provided with a crimp having a wavelength of 15 to 25 mm and a crimp angle determined by the wavelength and an amplitude of 0.09 to 0.32.
