An electrical power connector preparation method including employing a cold drawing technique to draw a metal round rod into a thin thickness conducting contact bar, stamping the thin thickness conducting contact bar to form a mating contact portion and a mounting portion, attaching the thin thickness conducting contact bar to a contact material strip, cutting off the thin thickness conducting contact bar, repeating the aforesaid steps to obtain a large amount of metal contacts at the contact material strip and then shaping the metal contacts, removing the shaped metal contacts from the contact materials trip and electroplating the shaped metal contacts, and then using an insert molding technique to mold electrically insulative terminal blocks on metal contacts so as to obtain electrical power connectors directly, or assembling electrically insulative terminal block and the respective metal contacts with one respective electrically insulative housing to form a respective electrical power connector.