The invention discloses low-alkalinity concrete and a manufacturing method of the low-alkalinity concrete. By adding a low-alkalinity plural gel material into sulphate aluminium cement clinker, the alkalinity of the concrete finished product is greatly lowered, and the probability that the concrete is degraded due to the alkalinity is effectively reduced. The low-alkalinity plural gel material manufactured from the substances such as steel slag, manganese slag, mine slag, sandstones and pulverized fuel ash with a special method can improve working performance of the concrete significantly, lower the alkalinity of the concrete and enhance the durability, compressive strength and flexural strength of the concrete effectively. Besides, because of utilization of the various types of waste slag, both environmental pollution and concrete production cost are reduced, and therefore the low-alkalinity concrete and the manufacturing method of the low-alkalinity concrete have obvious environmental and economic benefits.