A refrigerator(100) which comprises a housing, a refrigerating inner liner(1) and a freezing inner liner(2) arranged in the housing, and a foaming layer formed between the housing, the refrigerating inner liner(1) and the freezing inner liner(2); the housing comprises a back plate(31) and two side plates extending forward from the back plate(31), and the foaming layer comprises a first foaming zone(41) disposed close to the back plate(31), a second foaming zone disposed close to the side plates and a third foaming zone(43) disposed in an interior of the middle beam, and the third foaming zone(43) is connected to the second foaming zone; the refrigerator(100) further comprises a sealing device(5) that at least partially spaces the first foaming zone(41) apart from the third foaming zone(43). Further disclosed is a manufacturing method of a refrigerator. After the foaming material reaches the first foaming zone(41), a lot of foaming material may be limited from directly entering the interior of the middle beam due to the blocking of the sealing device(5), so that the density of the foaming material in the interior of the middle beam will not be too large, and the filling uniformity of the foaming material can be further improved effectively.