A high−reliability, high−dimension−accuracy ceramic component having electric characteristics thereof not significantly deteriorated and defects such as cracks restricted in the vicinity of an internal electrode in a substrate after firing when subjected to a high−dimension−accuracy firing method in which a glass ceramic laminate is fired while being held between heat shrinkage restricting sheets. A method of producing a ceramic component comprising the conductor printing step of printing on a glass ceramic green sheet a conductor paste having a sintering speed equivalent to that of the glass ceramic green sheet, the laminating step of laminating a plurality of the glass ceramic green sheets to form a laminate, a composite laminating step of further laminating on the one or both surfaces of the laminate heat shrinkage restricting green sheets mainly containing inorganic matters, a binder removing step of removing by burning organic matters from the composite laminate, the firing step of sintering the organic matter−removed composite laminate with sintering behaviors of the glass ceramic green sheets and the conductor paste matched, and the step of removing inorganic matters in the heat shrinkage green sheets.