The invention discloses a pre-installation process of a small single-door refrigerator tank, which includes the following steps: S1, self-inspection: inspecting the appearance quality of the inner connecting wire and the return air coil in the single-door refrigerator to ensure that the inner connecting wire and the return air coil are The gas coil is flat, free of shape, damage and incomplete; S2, covered wire: take the qualified internal connecting wire in S1, and use the side with a length of 320-380 mm at a distance of 160-200 mm from the terminal of the internal connecting wire The adhesive foam tape wraps the connecting wires and fixes them, which is convenient for the internal connecting wires to seal the perforation of the refrigerated temperature control box, and the tape is pasted in the correct, firm, and in place, tightly sealed to prevent leakage, and the connecting wires are wrapped correctly; S3, pre-installed : Insert the qualified internal connection wire in S1 into the perforation of the temperature control box to the middle of the foam with glue, and seal and fix the perforation with two 100mm long pieces of foam with glue on one side. The refrigerator liner pre-installation process of the present invention can pre-install the refrigerator well, and the process is simple, the structure is compact, and it is very practical.