The utility model discloses an automatic cloth scrubbing machine which comprises a table top and a cabinet-type supporter arranged below the table top. The table top is corrugated and provided thereon with a slide bar seat and a slide bar on the slide bar seat. The slide bar is further provided with a bearing sleeve that is engaged with an extension arm by a shaft thereon. The extension arm is also provided with a motor. A bristle brush is arranged above the motor and the extension arm. A feed chamber and a booster pump are provided inside the cabinet-type supporter and are connected with each other by a pipe. A master switch, a leakage protector, a spray photoelectric switch, and a speed regulator are arranged on the wall of the cabinet-type supporter and connected electrically. The utility model has the advantages of reasonable design, adjustable speed of low-speed motor according to the fabric material, use of anticorrosive stainless steel on the table top, no damage of bristle brush to clothes, reduced consumption of time and labor in laundry, low noise, no injury to human body, no environmental pollution, both horizontal and vertical motion of bristle brush, and automatic feeding of nozzle by the use of booster pump, and automatic scrubbing operation.