Disclosed are a dual-manipulator washing machine and a cleaning method thereof, the dual-manipulator washing machine comprising a rotary workbench (5), a high-pressure washing chamber (1) and a vacuum drying chamber (2), wherein the rotary workbench (5) is arranged between the high-pressure washing chamber (1) and the vacuum drying chamber (2); the high-pressure washing chamber (1) and the vacuum drying chamber (2) are independent from each other; two manipulators (3, 4) are arranged on the rotary workbench (5); and the two manipulators (3, 4) can switch between the high-pressure washing chamber (1) and the vacuum drying chamber (2) so as to achieve high-pressure washing and vacuum drying in the apparatus. The high-pressure washing chamber (1) and the vacuum drying chamber (2) have a compact structure; the entire process of grabbing a workpiece, carrying a workpiece, high-pressure washing and vacuum drying can be completed in the apparatus; high-pressure washing and vacuum drying can be carried out at the sam
