A mixed liquid manufacturing apparatus comprises: an information input unit, in which information of an object, to which a mixed liquid is offered, is input; a material storage system that stores a plurality of materials for a mixed liquid; a product information system that selects kinds and quantities of the stored materials on the basis of the input information of the object, to which a mixed liquid is offered; a liquid transfer unit, by which the selected materials are taken out from the material storage system; a mixing unit, in which the materials supplied from the liquid transfer unit are mixed; an injection unit, by which the mixed liquid is injected into a mixed liquid container; an input unit, by which matters being declared on a label of the mixed liquid container are input; and a label formation unit, in which the input matters are printed on the label and the label is stuck on the mixed liquid container, and wherein the label formation unit begins printing before the injection unit completes injection of the mixed liquid into the container.