The invention relates to a method for preparing form relieved teeth. The method comprises the steps of (1) selecting materials; (2) putting the raw materials into an intermediate frequency furnace and smelting; (3) pouring molten steel into a fired mold shell to cast into form relieved teeth; (4) cooling the form relieved teeth, then cutting dead heads and sprues, and cleaning and polishing; (5) normalizing and tempering the whole form relieved teeth, then discharging and air cooling; (6) induction quenching the tips of the form relieved teeth, keeping warm for a while, and then water cooling; and (7) tempering the form relieved teeth, keeping warm for a while, discharging and air cooling to obtain the form relieved teeth. The form relieved teeth have uniform tissue and overall components and small grains, have high toughness and provide a good tissue for post induction hardening; the tips of the form relieved teeth induction quenching have high hardness and abrasion performance, and heat up rapidly; and the grains are smaller than the grains heated by an existing chamber electric furnace, and have good abrasion performance and high toughness, thereby effectively prolonging the service life of the form relieved teeth.