The invention relates to the technology of the production of ceramic ferroelectric composite materials, and it can be used in the electronics industry for the production of the broad class of elements and instruments of electronic engineering controlled by an applied electric field. The invention is intended for obtaining the ceramic ferroelectric composite material that ensures the achievement of the technical result, consisting in a decrease in the level of the dielectric losses in the radio and microwave frequencies for the materials with the dielectric constant from 152 to 796 together with an increase in the tunability of the dielectric constant by the electric field. The technical result is achieved by the proposed ceramic ferroelectric composite material, produced from the composition including BaTiO.sub.3 and SrTiO.sub.3, which additionally includes the magnesium-containing mixture of magnesium orthotitanate Mg.sub.2TiO.sub.4 and magnesia MgO, with the following content of components, mass %: TABLE-US-00001 BaTiO.sub.3 27.0-48.8 StTiO.sub.3 25.0-39.5 magnesium-containing mixture of Mg.sub.2TiO.sub.4 and MgO the remainder, where the components in the magnesium-containing mixture have the following content, mass %: TABLE-US-00002 Mg.sub.2TiO.sub.4 6.2-92.4 MgO the remainder.