The invention provides a multiple chiral center nitrogen heterocyclic carbene precursor salt of camphor skeleton, a synthetic method and usage thereof. The precursor salt has a structural formula as indicated on the right and can be prepared by taking inexpensive and easily available camphor as a starting material through two-step synthesizing. The invention has relatively better application in the reactions of catalyzing polarity reversal of aldehyde compounds and extended polarity reversal of unsaturated aldehyde compounds and can be used for preparing chiral Gamma-butyl lactone compounds orchiral and high different flavonoid compounds.