A method for preparing buckwheat noodles capable of preparing noodles using only 100% pure buckwheat includes a soaking step of soaking buckwheat grain in water at room temperature, a heating step of boiling the buckwheat grain undergoing the soaking step, a husk separation step of separating the buckwheat grain undergoing the heating step into endosperm and husks and adding salt water to the endosperm, a kneading and aging step of kneading and aging the endosperm with which the salt water is mixed through the husk separation step to make dough, a noodle making step of making buckwheat noodles by extruding the dough through a noodle-making machine, a reheating step of reheating the buckwheat noodles prepared through the noodle making step by steaming, and a cooling and drying step of cooling and drying the reheated buckwheat noodles.
