The invention belongs to the technical field of electronic equipment, and more specifically relates to a preparation method of a ceramic capacitor. The preparation method comprises following steps: 1, ingredients of an electronic ceramic composition are subjected to uniform wet grinding and drying; 2, the dried electronic ceramic composition is mixed with a ceramic molding adhesive at a certain ratio, and an obtained mixture is stirred to be uniform, and is subjected to pressure casting and moulding so as to obtain a green body; 3, the green body is subjected to adhesive removing, sintering, and ultrasonic cleaning successively; and 4, the green body is subjected to sorting, silver printing, reduction, measuring, and encapsulating; wherein adhesive removing temperature is controlled to be 280 to 400 DEG C, sintering temperature is controlled to be 1350 to 1430 DEG C, and sintering time is controlled to be 3 to 4h. The ceramic capacitor obtained via the preparation method possesses relatively high dielectric constant, high capacitor stability, and excellent voltage withstand characteristics; the preparation method is simple; equipment requirement is low; production cost is low; and profit rate is high.