A refrigerator with an ice maker, comprising: a refrigerating compartment; and an ice-making chamber, wherein an ice maker is provided inside the ice-making chamber, the ice-making chamber is refrigerated by an ice-making refrigeration system; wherein the ice-making refrigeration system includes: an ice-making evaporator disposed outside the ice-making chamber; an ice-making air duct; and an ice-making fan disposed in the ice-making air duct; the ice-making evaporator is communicated with the ice maker through the ice-making air duct to form a refrigerating cycle, wherein the ice-making chamber and the ice-making evaporator being disposed inside the refrigerating compartment, the ice-making air duct comprises an ice-making air supply duct for introducing cold air into the ice maker, and an ice-making air return duct characterized in that the ice-making air supply duct is configured to contain the ice-making evaporator, wherein the ice-making air supply duct comprises an ice-making air duct sealing surface provided on an inner surface of a refrigerating compartment liner with respect to a space directing to an inside of the refrigerating compartment, and an ice-making air duct cover plate configured to cover the ice-making evaporator and being in sealed connection with the ice-making air duct sealing surface, wherein a refrigerating compartment liner sealing plate is disposed at an inner side of the ice-making air duct cover plate, and a gap is left between the refrigerating compartment liner sealing plate and the ice-making air duct cover plate to form the ice-making air return duct. a refrigerating compartment; and an ice-making chamber, wherein an ice maker is provided inside the ice-making chamber, the ice-making chamber is refrigerated by an ice-making refrigeration system; wherein the ice-making refrigeration system includes: an ice-making evaporator disposed outside the ice-making chamber; an ice-making air duct; and an ice-making fan disposed in the ice-making air duct; the ice-making evaporator is communicated with the ice maker through the ice-making air duct to form a refrigerating cycle, wherein the ice-making chamber and the ice-making evaporator being disposed inside the refrigerating compartment, the ice-making air duct comprises an ice-making air supply duct for introducing cold air into the ice maker, and an ice-making air return duct characterized in that the ice-making air supply duct is configured to contain the ice-making evaporator, wherein the ice-making air supply duct comprises an ice-making air duct sealing surface provided on an inner surface of a refrigerating compartment liner with respect to a space directing to an inside of the refrigerating compartment, and an ice-making air duct cover plate configured to cover the ice-making evaporator and being in sealed connection with the ice-making air duct sealing surface, wherein a refrigerating compartment liner sealing plate is disposed at an inner side of the ice-making air duct cover plate, and a gap is left between the refrigerating compartment liner sealing plate and the ice-making air duct cover plate to form the ice-making air return duct. an ice-making evaporator disposed outside the ice-making chamber; an ice-making air duct; and an ice-making fan disposed in the ice-making air duct; the ice-making evaporator is communicated with the ice maker through the ice-making air duct to form a refrigerating cycle, wherein the ice-making chamber and the ice-making evaporator being disposed inside the refrigerating compartment, the ice-making air duct comprises an ice-making air supply duct for introducing cold air into the ice maker, and an ice-making air return duct characterized in that the ice-making air supply duct is configured to contain the ice-making evaporator, wherein the ice-making air supply duct comprises an ice-making air duct sealing surface provided on an inner surface of a refrigerating compartment liner with respect to a space directing to an inside of the refrigerating compartment, and an ice-making air duct cover plate configured to cover the ice-making evaporator and being in sealed connection with the ice-making air duct sealing surface, wherein a refrigerating compartment liner sealing plate is disposed at an inner side of the ice-making air duct cover plate, and a gap is left between the refrigerating compartment liner sealing plate and the ice-making air duct cover plate to form the ice-making air return duct.