The invention discloses a preparation method of a pottery pot. According to the preparation method of the pottery pot, Longshan Wuyuan river red clay and Chinese medical stone are used as raw materials and are appropriately proportioned; the production process of Longshan Degong black pottery is adopted, the processes of clay fermentation, vacuum pugging, moulding by throwing, polishing and sculpturing, engraving and calendering, shade drying and grinding and wood burning are adopted, and the techniques of pottery firing, fuming and carburizing through pine branches and pine leafs by Longshanancestors 4,600 years ago are adopted for reference, and the pottery pot is prepared through more than a dozen procedures and an all elaborately hand-crafted way. Through the preparation method, the wood burning process is adopted, natural kiln change is carried out, and the pottery pot is rich in mineral substance of calcium oxide, magnesium oxide, iron oxide, silicon oxide and trace element beneficial to human bodies and has the health care effect. Through the preparation method, the technical problems of the black pottery art water seepage, water avoidance and color difference are solved, the service life is prolonged, and the pottery pot is made high-end and elegant, and integrates the characteristics of being artistic, cultural, ornamental, practical and collectible, and accordingly people with the pottery pot can return to nature, enjoy nature, and prolong life.