The invention relates to a technical field of edible starch noodle processing, and particularly relates to a method for processing canna edulis ker-potato starch noodles with pure plant additives. The method comprises steps of preparing powder, fermenting, detecting the moisture content and the PH value, processing into starch noodles, heating, curing, freezing, shaping, drying, packaging and the like. The starch noodles prepared by adopting the method do not contain any preservative, food colouring, additives harmful to human bodies, such as gel, starch noodle dispersants and brighteners, are free from pollution, shining bright in color, tough and chewy, have the regular appearance, and the boiling-resisting and soaking-resisting effects, and are truly pure natural green health-care products. The noodles contain multiple vitamins and microelements needed by human bodies, are rich in dietary fibers, vitamin B, flavonoids and the like, have functions of lowering blood sugar and clearing heat and toxic materials, have a supportive therapeutic effect on high blood pressure and hyperlipidemia, are the new generation of medicine-food homologous health-care food, and have the broad development prospect.