The utility model provides an inner container and U shell matching system for a refrigerator production line. The method comprises the steps that a code printing device prints codes on an inner container to generate code numbers; the first lifting and conveying device conveys the inner containers to the warehouse-in and warehouse-out conveying system, and the warehouse-in and warehouse-out conveying system conveys the inner containers into the corresponding inner container warehouse positions in the inner container centralized storage warehouse according to the code numbers; the warehouse-in and warehouse-out transportation system further conveys the corresponding inner containers in the inner container collection and storage warehouse to a second lifting and conveying device according tothe required inner container models, and the second lifting and conveying device conveys the inner containers to an inner container preassembling line; the third lifting conveying device conveys the inner containers on the inner container preassembling line to the inner container conveying line; the fourth lifting conveying device conveys the inner containers on the inner container conveying lineto an assembling station; and the shell delivery transportation system conveys the corresponding U shells in the U shell collection and storage warehouse to a fifth lifting and conveying device according to the identification information of the inner containers, the fifth lifting and conveying device conveys the U shells to an assembly station, and the U shells are arranged on the inner containersin a sleeving mode from the upper portions of the inner containers.