The invention relates to the technical field of a building material, and more specifically relates to sulphate aluminium cement. The sulphate aluminium cement comprises the following compoentns in parts by weight: 85-95 parts of sulphate aluminium cement clinker, 4-8 parts of boron slag, 1-2 parts of a coagulation accelerator, and 2-3 parts of a water reducer. By adding the coagulation acceleratorand the water reducer, and early strength of the cement is increased, especially intensity for 3 h or 4 h. The demoulding time of the cement is shortened, building production efficiency is increased,and a proper amount of alkali content is introduced into the cement clinker by adding sodium hydroxide, a hydration speed of the clinker at an early stage is accelerated, intensity of the cement at the early stage is increased, iron oxide is added in the cement clinker, so that a few iron ions can be introduced, the clinker calcining temperature is low, and the heat consumption during a clinker calcining process is reduced.