A branching air supply device for a refrigerator, comprising: a housing, with a plurality of airflow passages arranged in parallel being defined in the housing; a plurality of baffle plates, each of the baffle plates being movably mounted to the housing and being configured to perform complete blocking, partial conducting or complete conducting of one of the airflow passages in different positions; and a linkage device movably mounted to the housing, wherein the linkage device is configured to enable each of the baffle plates to move intermittently when the linkage device moves, in order to enable each of the baffle plates to move or keep still during the movement of the linkage device from one position to another, and to enable each of the baffle plates to move or keep still when the other, one or more of the baffle plates move, so that each of the baffle plates adjusts the flow rate of airflow in one of the airflow passages, wherein each of the baffle plates is rotatably mounted in one of the airflow passages; or each of the baffle plates is movably mounted to the housing in a direction perpendicular to the airflow passages, characterized in that the linkage device comprises a plurality of sliders synchronously moving in a direction parallel to the airflow passages; each of the sliders extends in the direction parallel to the airflow passages, and has a concave-convex surface extending in a bent manner in the direction parallel to the airflow passages; and each of the baffle plates is in contact with the concave-convex surface of one of the sliders, such that when each of the sliders moves, under the curved surface change of the concave-convex surface of the slider, one of the baffle plates rotates intermittently or moves in the direction perpendicular to the airflow passages. a housing, with a plurality of airflow passages arranged in parallel being defined in the housing; a plurality of baffle plates, each of the baffle plates being movably mounted to the housing and being configured to perform complete blocking, partial conducting or complete conducting of one of the airflow passages in different positions; and a linkage device movably mounted to the housing, wherein the linkage device is configured to enable each of the baffle plates to move intermittently when the linkage device moves, in order to enable each of the baffle plates to move or keep still during the movement of the linkage device from one position to another, and to enable each of the baffle plates to move or keep still when the other, one or more of the baffle plates move, so that each of the baffle plates adjusts the flow rate of airflow in one of the airflow passages, wherein each of the baffle plates is rotatably mounted in one of the airflow passages; or each of the baffle plates is movably mounted to the housing in a direction perpendicular to the airflow passages, characterized in that the linkage device comprises a plurality of sliders synchronously moving in a direction parallel to the airflow passages; each of the sliders extends in the direction parallel to the airflow passages, and has a concave-convex surface extending in a bent manner in the direction parallel to the airflow passages; and each of the baffle plates is in contact with the concave-convex surface of one of the sliders, such that when each of the sliders moves, under the curved surface change of the concave-convex surface of the slider, one of the baffle plates rotates intermittently or moves in the direction perpendicular to the airflow passages.