Food fresh-keeping machine and base thereof

The utility model discloses a food fresh-keeping machine and a base thereof. A base of a food fresh-keeping machine comprises a base body, a lower sealing ring is arranged on the base body, and a first limiting piece used for limiting a fresh-keeping bag is arranged on the front side of the lower sealing ring. The base body is further provided with a second limiting piece, the second limiting piece is arranged in the lower sealing ring, and the upper end face of the second limiting piece is higher than the upper end face of the lower sealing ring. The food fresh-keeping machine comprises a base of the food fresh-keeping machine; the base further comprises an upper cover, the rear side of the upper cover is pivoted to the base body, and an upper sealing ring corresponding to the lower sealing ring in position is arranged on the upper cover. According to the utility model, the first limiting piece is arranged on the base body and is arranged on the front side of the lower sealing ring, so that the first limitin