The invention relates to the technical field of preparation of high-purity standard noble metal ingots, and particularly relates to a preparation method of a high-purity standard palladium ingot. Thepreparation method of the high-purity standard palladium ingot comprises the following steps in sequence of A, raw material weighing; B, compressing; C, vacuum melting; D, forging and stamping; E, surface turning; F, weighing; G, marking; and H, cleaning. The preparation method of the high-purity standard palladium ingot has the advantages that the production process is simple, purity of the palladium ingot is ensured, the appearance of the high-purity standard palladium ingot is tidy and attractive, and the economic benefit is improved.