The invention discloses a ceramic lining plate of a power module. The ceramic lining plate comprises a first metal layer, a second metal layer and a third metal layer which are sequentially arranged from top to bottom, wherein a first ceramic layer is arranged between the first metal layer and the second metal layer, a second ceramic layer is arranged between the second metal layer and the third metal layer, the first metal layer is configured to be an emitter region and a control signal terminal region which are isolated with each other, the second metal layer is configured to be a collectorregion, the second metal layer also can further extend to an upper surface of the first ceramic layer via a through hole, grooves are formed in an upper surface of the lining plate along a thickness direction and are respectively used for installing a first power chip and a second power chip, and the grooves extend to the first metal layer from the first metal layer. By the ceramic lining plate, the technical problems that a circuit interconnection structure of the ceramic lining plate of an existing power module is large in stray inductance, a welding tool is needed to be used during chip welding, a metal liner on a front surface of the lining plate is a combination layer of strong electricity and weak electricity and interconnection between the lining plates is relatively complicated canbe solved.