The present invention relates to a production method of sweet potato noodles, belongs to the technical field of food, and solves a technical problem of providing the production method of the sweet potato noodles. The method comprises the following steps: a, sweet potatoes are peeled, the peeled sweet potatoes are then placed in saturated steam at 0.2-0.4 MPa to be heated for 15-30 min, the heated sweet potatoes are cooled, water is added, and the potatoes are beat into juice; b, high gluten flour, low gluten flour, edible salt, egg white and the sweet potato juice are mixed, water is added, and dough kneading is conducted; c, after the dough kneading, the dough is cured for a curing time of 30-60 min at a curing temperature of 40-50 DEG C; and d, tableting, strip cutting, drying and cutting off are conducted to obtain the sweet potato noodles. The fine dried sweet potato noodles are simple in preparation method, easily obtainable in the raw materials, and relatively low in costs. Besides, the method can significantly reduce fracture rates and the obtained noodles are resistant to boiling and brewing, not sticky together, strong and high in toughness, delicate in mouthfeel, lubricating, and chewy. Besides, the noodles are rich in amino acids, vitamins and other beneficial substances, can effectively supplement human body needed nutrition, improve human body immunity, and promote cytokine productions.