Method and device for controlling temperature of refrigerator, refrigerator and storage medium

The invention relates to the technical field of refrigeration equipment, and discloses a method for controlling the temperature of a refrigerator, the refrigerator comprises a Stirling cryocooler, and the method comprises the steps that the cold head temperature of the Stirling cryocooler is detected; detecting the current temperature in the box; and under the condition that the current temperature in the box is larger than the first temperature threshold value, the operation power of the Stirling cryocooler is controlled according to the cold head temperature. And under the condition that the current temperature in the box is larger than the first temperature threshold value, the difference between the temperature in the box and the target temperature is large, and cylinder collision of the Stirling cryocooler possibly occurs. And according to the cold head temperature, the operation power of the Stirling cryocooler is controlled, and the operation power is made to be matched with the cold head temperature.