To provide cement clinker having high sulfate resistance and low self-shrinking property, which can be obtained by only adjusting the blending ratios of normal materials used for producing cement clinker.

In the cement clinker, the content of alite is 5-85 mass% and the content of belite is 5-85 mass%, each value is calculated by Bogue's equation, and the total content of an aluminate phase and a ferrite phase is 1-10 mass%. It is preferable that, in the cement clinker, the silica modulus is 4.0 mass% and the ratio of the residue after salicylic acid-methanol treatment is 10 mass%.