A refrigerator comprising: a cabinet ; a freezing compartment defined in the cabinet ; a door coupled to the cabinet so as to open and close the freezing compartment ; a shelf guide provided on an inner surface of the freezing compartment ; a support plate supported by the shelf guide; an evaporator , disposed throughout the freezing compartment and constituted by a refrigerant pipe supported by the support plate ; and a shelf mounted on the support plate ; wherein there is a pressure regulator , which is mounted at a predetermined position on the cabinet so as to allow an inside of the freezing compartment to communicate with an outside of the freezing compartment to reduce a difference in pressure upon opening the door , wherein the pressure regulator comprises: a connecting tube mounted at the predetermined position on the cabinet ; and a heater disposed around the connecting tube so as to heat the connecting tube to thus eliminate frost generated on an inner surface of the connecting tube , wherein the support plate comprises: lateral side supports , which extend downward from both lateral side edges of the support plate to surround the evaporator refrigerant pipe and which are supported by the shelf guide, and a plurality of support holders , which extend downward from a lower surface of the support plate to support the evaporator refrigerant pipe . a cabinet ; a freezing compartment defined in the cabinet ; a door coupled to the cabinet so as to open and close the freezing compartment ; a shelf guide provided on an inner surface of the freezing compartment ; a support plate supported by the shelf guide; an evaporator , disposed throughout the freezing compartment and constituted by a refrigerant pipe supported by the support plate ; and a shelf mounted on the support plate ; wherein there is a pressure regulator , which is mounted at a predetermined position on the cabinet so as to allow an inside of the freezing compartment to communicate with an outside of the freezing compartment to reduce a difference in pressure upon opening the door , wherein the pressure regulator comprises: a connecting tube mounted at the predetermined position on the cabinet ; and a heater disposed around the connecting tube so as to heat the connecting tube to thus eliminate frost generated on an inner surface of the connecting tube , wherein the support plate comprises: lateral side supports , which extend downward from both lateral side edges of the support plate to surround the evaporator refrigerant pipe and which are supported by the shelf guide, and a plurality of support holders , which extend downward from a lower surface of the support plate to support the evaporator refrigerant pipe . a connecting tube mounted at the predetermined position on the cabinet ; and a heater disposed around the connecting tube so as to heat the connecting tube to thus eliminate frost generated on an inner surface of the connecting tube , wherein the support plate comprises: lateral side supports , which extend downward from both lateral side edges of the support plate to surround the evaporator refrigerant pipe and which are supported by the shelf guide, and a plurality of support holders , which extend downward from a lower surface of the support plate to support the evaporator refrigerant pipe . lateral side supports , which extend downward from both lateral side edges of the support plate to surround the evaporator refrigerant pipe and which are supported by the shelf guide, and a plurality of support holders , which extend downward from a lower surface of the support plate to support the evaporator refrigerant pipe . <EOS>