The invention discloses a chemical coating prepared dielectric material of base-metal electrode multilayer ceramic capacitor, belonging to the capacitor material preparing technology, which adopts the technical proposal that a plurality of barium titanate grains are coated by the doped elements through chemical coprecipitation; the main ingredient, barium titanate BaTiO3, accounts for 90mol% to 97mol% of the prescription; the amount of nanometer inhibitory coating composite oxide accounts for 3mol% to 10mol% of the total materials. The ceramic material is sintered at a reducing atmosphere controlled by a humidified gas mixture of nitrogen and hydrogen at a temperature between 950 to 1250 DEG C to get a X7R/X5R type MLCC material; wherein the dielectric constant of the material at room temperature is 2000 to 2700; the temperature coefficient of capacitance is less than or equal to positive and negative 15%; the dielectric loss at room temperature is less than or equal to 2%. The ceramic crystal grain under 200nm has low dielectric loss and good material uniformity; the multilayer ceramic capacitor produced with the ceramic crystal grain has the advantages of large capacity, ultrathin dielectric layer and the thickness less than 2um.