The invention relates to a chiral diene rhodium metal catalyst and a preparation method and application thereof and belongs to the field of catalysts. The preparation method includes: dropwisely adding dimethyl aluminum chloride solution into (-)-alpha-phellandrene and ethylic propiolate under nitrogen protection at minus 78 DEG C, and subjecting the obtained mixture to quenching and fast column chromatography separation to obtain chiral diene ligand; dissolving the chiral diene ligand into ethanol, adding metal source, performing stirring reaction under room temperature for 2-3 hours, concentrating, filtering, and recrystallizing to obtain the catalyst. The catalyst has the advantages that the catalyst is easy in raw material obtaining, simple in synthesizing route, economic, environmentally friendly and cheap; the catalyst can be used independently or combined with an organic compound containing phosphine to form a catalyzing system, and the catalyst is applicable to p-isonitrile ethyl benzoate, p-isonitrile isopropyl benzoate, p-isonitrile tert-butyl ester benzoate, p-isonitrile n-butyl benzoate, p-isonitrile n-pentyl benzoate, p-isonitrile cyclohexyl benzoate, p-isonitrile n-octyl benzoate, alpha-isonitrile naphthalene or copolymerization of two or three of the above.