A refrigerator with a separate ice-making system, comprising: a refrigerating compartment and an ice-making chamber disposed inside the refrigerating compartment; an ice maker provided inside of the ice-making chamber; and an ice-making refrigeration system configured to refrigerate the ice-making chamber, the ice-making refrigeration system including an ice-making evaporator, an ice-making air supply duct, an ice-making fan and an ice-making air return duct; wherein the ice-making air supply duct and the ice-making air return duct are provided on back of the refrigerator; the ice-making air supply duct is provided in front of or in back of the ice-making air return duct; the ice-making evaporator is disposed inside the refrigerating compartment and outside the ice-making chamber; and the ice-making evaporator is air communicated with the ice maker through the ice-making air supply duct and the ice-making air return duct to form a refrigerating cycle loop, the refrigerator comprising a refrigerating ice-making air duct disposed in the refrigerating compartment, the refrigerating ice-making air duct includes an air duct front cover plate, air duct foam, and an air duct rear cover plate disposed sequentially from front to rear; wherein, the ice-making air return duct is provided in between the air duct foam and the air duct rear cover plate, and the air duct front cover plate is disposed on an outer side of a rear wall of a refrigerating compartment liner, the refrigerator further comprising a refrigeration system disposed in the refrigerating compartment, wherein the refrigeration system includes a refrigerating evaporator, a refrigerating air supply duct, a refrigerating fan, and a refrigerating air return duct; wherein, the refrigerating air supply duct is provided between the air duct foam and the air duct rear cover plate, the refrigerating fan directs cold air into the refrigerating air supply duct; and the refrigerating air return duct is formed between the air duct rear cover plate and the rear wall of the refrigerating compartment liner. a refrigerating compartment and an ice-making chamber disposed inside the refrigerating compartment; an ice maker provided inside of the ice-making chamber; and an ice-making refrigeration system configured to refrigerate the ice-making chamber, the ice-making refrigeration system including an ice-making evaporator, an ice-making air supply duct, an ice-making fan and an ice-making air return duct; wherein the ice-making air supply duct and the ice-making air return duct are provided on back of the refrigerator; the ice-making air supply duct is provided in front of or in back of the ice-making air return duct; the ice-making evaporator is disposed inside the refrigerating compartment and outside the ice-making chamber; and the ice-making evaporator is air communicated with the ice maker through the ice-making air supply duct and the ice-making air return duct to form a refrigerating cycle loop, the refrigerator comprising a refrigerating ice-making air duct disposed in the refrigerating compartment, the refrigerating ice-making air duct includes an air duct front cover plate, air duct foam, and an air duct rear cover plate disposed sequentially from front to rear; wherein, the ice-making air return duct is provided in between the air duct foam and the air duct rear cover plate, and the air duct front cover plate is disposed on an outer side of a rear wall of a refrigerating compartment liner, the refrigerator further comprising a refrigeration system disposed in the refrigerating compartment, wherein the refrigeration system includes a refrigerating evaporator, a refrigerating air supply duct, a refrigerating fan, and a refrigerating air return duct; wherein, the refrigerating air supply duct is provided between the air duct foam and the air duct rear cover plate, the refrigerating fan directs cold air into the refrigerating air supply duct; and the refrigerating air return duct is formed between the air duct rear cover plate and the rear wall of the refrigerating compartment liner.