1. Based on rutile and rare earth metal oxides, the thermal stable capacitor porcelain is a kind of porcelain which is added with rare earth metal oxides, especially lanthanum oxide, in the rutile porcelain which has low thermal stability 2. Magnesium titanate ceramic is a kind of ceramic with magnesium titanate as the main crystal phase, which is made by adding a small amount of mineralizer into the magnesium titanate sintering block. The AE of magnesium titanate ceramics is positive, and the absolute value is not large. These ceramics can be mixed with other ceramics with negative AE, such as Catio3, SRTIO3, etc. . A series of different AE ceramics to meet the needs of capacitors in different applications. These ceramics basically belong to the TIO2-MGO CAO system and TIO2-MGO-SRO system 3. Calcium stannate ceramics have high dielectric constant and good sintering performance, so the heat-stable ceramics based on it is an important capacitor ceramics 4. Magnesium lanthanum titanium ceramics are composed of magnesium metatitanate and Titania La2O3.2TIO2 crystal phase. It is widely used in the manufacture of capacitor ceramics with high frequency thermal compensation and thermal stability due to its high dielectric constant and low dielectric loss. A series of ceramics with different dielectric constant and temperature coefficient can be obtained by adjusting the proportion of each component in the composition of magnesium-lanthanum-titanium ceramics.