The invention discloses a fine dried purslane noodle. The fine dried purslane noodle uses wheat flour as a main raw material, purslane, konjac powder and whole potato flour as auxiliary materials, and salt as an additive. The fine dried purslane noodle comprises, by mass, 90-91 parts of wheat flour, 3.2-4.2 parts of purslane, 1-1.5 parts of konjac powder, 3.5-4 parts of whole potato flour and 0.8 part of salt. A preparation method for the noodle comprises the following concrete procedures: preparation of purslane suspension, preparation of konjac gel, kneading, cooking, compounding, calendering, strip cutting, drying, cutting-off, packaging, etc. According to the invention, since purslane, konjac powder and whole potato flour are used as the auxiliary materials and the corresponding preparation method is employed, the noodle has improved taste and flavor, better toughness, unique delicate fragrance different from ordinary noodles, good cooking performance, excellent boiling resistance, abundant dietary fiber and various nutrients, low calorie, low fat, and enhanced nutritional value and therapeutic effect, and is beneficial for human health.