To inexpensively provide an aluminum-ceramic composite body which is low in thermal expansion and is applicable to a large component without impairing characteristics such as thermal conductivity by adjusting the thermal expansion while ensuring the workability of a worked portion and improving strength characteristics of a portion necessary for mechanical properties.

The manufacturing method of the aluminum-ceramic composite body 5 comprises: (1) a step of forming or working a ceramic porous body to a shape larger than a shape of a product, or forming or working a hole part to a tap hole or a through-hole 7 larger than the final shape thereof; (2) a step of inserting a screw of a graphite in the tap hole part and a graphite in the through-hole part; (3) a step of impregnating a metal mainly consisting of aluminum; (4) a step of working an outer peripheral part and a surface part of the aluminum-ceramic composite body to the final shape; and (5) a step of working an aluminum-graphite composite body 6 of the hole part or the like to the final shape.