A material mixing and supplying system is provided. The material mixing and supplying system includes a feeding module, at least three mixing and supplying barrels, a supply module, and a control unit, wherein the three mixing and supplying barrels are capable of mixing and supplying the mixed material. The supplying time of the mixed material is greater than a sum of the feeding time and the mixing time. A total operation number of the at least three mixing and supplying barrels is determined by a set amount of mixed material to be supplied by the material mixing and supplying system, and a total time to finish supplying the set amount of mixed material is determined by the total operation number.