In order to provide a food processing device that prevents unequal processing and stagnation because of water flow, a first rotating waterwheel (14) is provided on a starting end side (13c) in a direction of movement for washing in a water tank main body part (13a) for a water tank (13) with an open upper surface wherein an article (16) to be processed by washing is inserted such that first rotating fins (21), which send water in the direction of movement in the water tank main body part (13a), are attached along the outer periphery of a rod shaped shaft body (22). A second rotating waterwheel (15) is provided along a side wall in one side wall vicinity bottom part along the direction of movement such that second rotating fins (41), which send water flowing in a rotational direction perpendicular to the above direction of movement in the water tank main body part (13a), are attached along the outer periphery of a rod shaped shaft body (42). A dividing plate (63), which provides division between the water tank
