Instant noodles with a health function and a preparation method of the instant noodles relate to an instant food and a preparation method thereof. The instant noodles are made from, by weight, flour,drinking water, poria, coix seeds, hericium erinaceus, salt, celery, and chickens' extract. Cleaning, airing, stirring and crushing, mixing, and cooking are performed on the raw materials according toa weight ratio to obtain the instant noodles with a health function. According to the technical scheme, the instant noodles can be massively produced via an automatic machine, and cold processing technology is adopted to prevent loss of nutrient ingredients in a processing process. The instant noodles have the function of inducing diuresis to alleviate edema, fortifying the spleen and harmonizingthe stomach, and moving qi to promote digestion, and can prevent diseases of human organs.