The invention discloses a preparation method of a silicon carbide ceramic pot using graphene to enhance heat conductivity. The preparation method comprises the following steps of according to scientific and reasonable component proportional ratio, compounding silicon carbide micropowder, boron carbide micropowder, liquid phenolic resin, and graphene component; performing ball milling, granulating, isostatic pressing forming, non-pressure sintering and the like, so as to obtain the silicon carbide ceramic pot. The silicon carbide ceramic pot has the advantages that the density of a prepared blank is large, the uniformity is good, the strength is high, and the sintering can be performed through simple drying; by adopting the non-pressure sintering, the energy consumption is decreased. The preparation method has the advantages that the method is simple, the industrial control is convenient, the raw material cost is low and the obtaining is easy, and the non-toxic and non-harmful ceramic pot which can be in direct contact with food can be prepared; the heat conductivity is higher, the boiling time of foods is accelerated, and the energy-saving effect is realized.