A system of controlling an air-cooled refrigerator, the air-cooled refrigerator comprising a refrigerating compartment, a refrigerating evaporator, and a refrigerating fan for circulating an air between the refrigerating evaporator and the refrigerating compartment, the system comprising: a refrigerating compartment temperature detecting unit for detecting a temperature TL in the refrigerating compartment; a refrigerating compartment temperature determining unit for determining whether T2≤TL< T1, where T1 is a first predetermined temperature, and T2 is a second predetermined temperature; a refrigerating evaporator temperature detecting unit for detecting a temperature TH of the refrigerating evaporator; and a control unit for starting the refrigerating evaporator to refrigerate the refrigerating compartment and adjusting a rotating speed of the refrigerating fan to r1 if TL≥T1, and stopping an operation of the refrigerating evaporator and adjusting the rotating speed of the refrigerating fan according to the temperature TH to adjust a humidity in the refrigerating compartment if TL<T2, wherein the rotating speed of the refrigerating fan is decreased by the control unit stage by stage with an increase of the temperature TH; and a refrigerating evaporator temperature determining unit for determining the temperature of the refrigerating evaporator, wherein the rotating speed of the refrigerating fan is adjusted to r2 by the control unit if it is determined by the refrigerating evaporator temperature determining unit that TH<t3, the rotating speed of the refrigerating fan is adjusted to r3 by the control unit if it is determined by the refrigerating evaporator temperature determining unit that t3≤ TH<t4, the rotating speed of the refrigerating fan is adjusted to r4 by the control unit if it is determined by the refrigerating evaporator temperature determining unit that TH≥t4, where t3 is a third predetermined temperature, t4 is a fourth predetermined temperature, and r4 < r3 < r2 < r1, characterized in that the refrigerating evaporator comprises a coil pipe and a plurality of fins, the coil pipe is extended into a corrugated shape in a longitudinal direction to form a plurality of layers of pipe segments in the longitudinal direction, the plurality of fins are arranged in a lateral direction and connected with the coil pipe respectively, and wherein at least a part of the fins have at least a break point in the longitudinal direction to be discontinuous in the longitudinal direction. a refrigerating compartment temperature detecting unit for detecting a temperature TL in the refrigerating compartment; a refrigerating compartment temperature determining unit for determining whether T2≤TL< T1, where T1 is a first predetermined temperature, and T2 is a second predetermined temperature; a refrigerating evaporator temperature detecting unit for detecting a temperature TH of the refrigerating evaporator; and a control unit for starting the refrigerating evaporator to refrigerate the refrigerating compartment and adjusting a rotating speed of the refrigerating fan to r1 if TL≥T1, and stopping an operation of the refrigerating evaporator and adjusting the rotating speed of the refrigerating fan according to the temperature TH to adjust a humidity in the refrigerating compartment if TL<T2, wherein the rotating speed of the refrigerating fan is decreased by the control unit stage by stage with an increase of the temperature TH; and a refrigerating evaporator temperature determining unit for determining the temperature of the refrigerating evaporator, wherein the rotating speed of the refrigerating fan is adjusted to r2 by the control unit if it is determined by the refrigerating evaporator temperature determining unit that TH<t3, the rotating speed of the refrigerating fan is adjusted to r3 by the control unit if it is determined by the refrigerating evaporator temperature determining unit that t3≤ TH<t4, the rotating speed of the refrigerating fan is adjusted to r4 by the control unit if it is determined by the refrigerating evaporator temperature determining unit that TH≥t4, where t3 is a third predetermined temperature, t4 is a fourth predetermined temperature, and r4 < r3 < r2 < r1, characterized in that the refrigerating evaporator comprises a coil pipe and a plurality of fins, the coil pipe is extended into a corrugated shape in a longitudinal direction to form a plurality of layers of pipe segments in the longitudinal direction, the plurality of fins are arranged in a lateral direction and connected with the coil pipe respectively, and