The invention discloses a preparation method of a low-salt nutritional pickled vegetable. The preparation method comprises the following steps: a, preparing pickling brine, namely putting an appropriate amount of anise, rhizoma kaempferiae, perilla leaf, aniseed, amomum tsao-ko, myrcia, cinnamon, old ginger, pepper and rod chilli into water, adding edible salt, heating until boiling for 10-60 minutes, thoroughly cooling the cooked brine before pouring into a clean pickle jar, adding an appropriate amount of citric acid, malic acid, white vinegar, garlic juice, granulated sugar and sorghum white spirit, and stirring evenly to obtain the pickling brine; and b, cleaning and thoroughly drying the raw materials of the pickled vegetable, chopping into slices, strips or in other shapes, putting the chopped raw materials in the pickling brine, closing the cover, supplementing enough water at the neck of the jar, and pickling for 7-10 days to obtain the low-salt nutritional pickled vegetable. The preparation method of the low-salt nutritional pickled vegetable is simple and convenient to operate; the prepared pickled vegetable is good in taste, excellent in flavor, and sour, crisp, tasty and refreshing; the pickled vegetable is low in salt content, short in pickling time and not high in nitrite content; besides, the pickled vegetable is not fermented so that the nutritive elements can be locked efficiently, and therefore, the pickled vegetable has relatively high nutritive value.