The invention provides a chiral spiro monophosphine ligand, and an intermediate and a preparation method thereof. The compounds are structural compounds shown in the following formulas 1, 2 and 3 andcomprise racemates and optical isomers of the compounds, wherein m and n are integers of 0-3; X is CR1R2, NR1, O or S; R1 and R2 are respectively and independently hydrogen, C1-C8 alkyl, phenyl, 1-naphthyl, 2-naphthyl, C1-C8 alkoxy and ester group substituted alkyl; R is hydrogen, C1-C8 alkyl, substituted phenyl, substituted alkyl, C1-C8 alkoxy, phenyl, 1-naphthyl, 2-naphthyl, fluoro, chloro, bromo, iodo, cyano, carboxyl and hydroxyl; Y is O or CH2; Z is NR3R4, OR5 and R6; R3, R4, R5 and R6 are each independently substituted phenyl, a substituted alkyl, C1-C8 alkyl, a phenyl, 1-naphthyl and 2-naphthyl; and M is cyano, carboxyl or substituted alkyl.