Abstract: The present invention provides use of rape pollen in promoting high-yield production of monacolin K by Monascus purpureus and a method for promoting high-yield production of monacolin K, and relates to the technical field of culture of Monascus purpureus. The method includes adding 0.6%-4.8% of rape pollen into a fermentation culture medium for fermentation culture of Monascus purpureus. The present invention overcomes deficiencies of the prior art. By adding the rape pollen into the culture medium of Monascus purpureus, the content of monacolin K can be significantly increased after culture for 15 days, and particularly, when an addition amount of the rape pollen is 2.4%, the content of monacolin K is increased by 3.50 times on day 15, reaching 1,524 mg/L.