A multilayer ceramic capacitor and a manufacturing method thereof are disclosed. The multilayer ceramic capacitor includes a base part including ceramic dielectrics, and inner electrodes formed in the ceramic dielectrics and arranged in interval by a staggered manner; two first outer electrodes of outer electrode layers are sintered and formed on two sides of the base part, and in electrical contact with the inner electrode terminals of the inner electrodes. Second outer electrodes are formed on outer parts of the two first outer electrodes. The inner electrodes and the first outer electrodes have barium titanate powder and nickel powder with average particle diameters in range of 0.2 μm to 0.4 μm, so that the inner electrodes are in good electrical contact with the first outer electrodes, to improve binding strength and reduce peeling of the first outer electrodes from the inner electrodes.