Door assembly and dish washing machine

The utility model relates to the technical field of kitchen appliances. The door assembly comprises an outer door body and an inner door body fixed to the inner side of the outer door body, an inserting rod set is arranged on the inner side of the outer door body, an inserting groove set is correspondingly formed in the side, close to the outer door body, of the inner door body, the inserting rodset is correspondingly inserted into the inserting groove set, and a gap is further formed between the inserting rod set and the inner side wall of the inserting groove set and ranges from 0.1 mm to 1.5 mm. The utility model further provides a dish washing machine which comprises a machine body and a door assembly. An inserting rod set and an inserting groove set are arranged on an outer door bodyand an inner door body correspondingly. The inner door body and the outer door body are fixed by inserting the insertion rod set into the insertion groove set, the use of screws is reduced, and a gapis formed when the inserti