A refrigerator, comprising: a storage compartment; a refrigeration air passage configured to supply refrigeration air; and a top air passage that is provided at a top wall of the storage compartment, comprises a rear end air inlet, a front end air inlet and a mixed air outlet opening downwards, and is configured to receive refrigeration air blown from the refrigeration air passage via the rear end air inlet, receive return air returning from the storage compartment via the front end air inlet, and allow the refrigeration air and the return air to flow into the storage compartment in a mixed manner via the mixed air outlet, characterized in that, the refrigerator further comprising: a cooling chamber provided with an air outlet connected with the refrigeration air passage; a cooling device provided in the cooling chamber to cool the air passing the cooling chamber; a blower provided at the air outlet of the cooling chamber; a return air passage connecting a lower space of the storage compartment and the cooling chamber, such that a part or all of the air in the storage compartment enters the cooling chamber via the return air passage and enters the refrigeration air passage after being cooled by the cooling device; another storage compartment provided below the storage compartment and in front of the cooling chamber; another refrigeration air passage connecting the air outlet of the cooling chamber and the another storage compartment; and another return air passage connecting the another storage compartment and the cooling chamber. a storage compartment; a refrigeration air passage configured to supply refrigeration air; and a top air passage that is provided at a top wall of the storage compartment, comprises a rear end air inlet, a front end air inlet and a mixed air outlet opening downwards, and is configured to receive refrigeration air blown from the refrigeration air passage via the rear end air inlet, receive return air returning from the storage compartment via the front end air inlet, and allow the refrigeration air and the return air to flow into the storage compartment in a mixed manner via the mixed air outlet, characterized in that, the refrigerator further comprising: a cooling chamber provided with an air outlet connected with the refrigeration air passage; a cooling device provided in the cooling chamber to cool the air passing the cooling chamber; a blower provided at the air outlet of the cooling chamber; a return air passage connecting a lower space of the storage compartment and the cooling chamber, such that a part or all of the air in the storage compartment enters the cooling chamber via the return air passage and enters the refrigeration air passage after being cooled by the cooling device; another storage compartment provided below the storage compartment and in front of the cooling chamber; another refrigeration air passage connecting the air outlet of the cooling chamber and the another storage compartment; and another return air passage connecting the another storage compartment and the cooling chamber. a cooling chamber provided with an air outlet connected with the refrigeration air passage; a cooling device provided in the cooling chamber to cool the air passing the cooling chamber; a blower provided at the air outlet of the cooling chamber; a return air passage connecting a lower space of the storage compartment and the cooling chamber, such that a part or all of the air in the storage compartment enters the cooling chamber via the return air passage and enters the refrigeration air passage after being cooled by the cooling device; another storage compartment provided below the storage compartment and in front of the cooling chamber; another refrigeration air passage connecting the air outlet of the cooling chamber and the another storage compartment; and another return air passage connecting the another storage compartment and the cooling chamber.