The invention relates to a preparation method of vorapaxar and intermediates thereof. The preparation method provided by the invention has no need for reducing carboxylic acid to aldehyde, directly oxidizes corresponding alcohol into corresponding aldehyde, is safe in operation, and avoids the harsh condition of using anhydrous palladium carbon in the existing technology that firstly carboxylic acid is converted into acyl chloride and then catalytic hydrogenation is carried out to obtain aldehyde through a palladium catalyst. The preparation method is simple, has simple operation steps, simplifies the reaction steps, and saves raw materials and reagents. The whole line is low in production cost and high in yield, thus being suitable for industrial production.