The utility model provides a dyeing machine agent distribution automatic operation system. A vapor inflow pipe is communicated to the left end of a liquor distribution main pipe. A water pump, a water flow valve and a vapor inflow main electromagnetic valve are sequentially installed on the vapor inflow pipe from left to right. An air inflow pipe is communicated with the portion, between the water flow valve and the vapor inflow main electromagnetic valve, of the vapor inflow pipe. An air inflow electromagnetic valve is arranged on the air inflow pipe. A liquor conveying pipe is communicated to the right end of the liquor distribution main pipe and provided with a liquor conveying electromagnetic valve, a liquor conveying flow valve, a liquor conveying pump and a rear liquor conveying electromagnetic valve. A dye liquor inflow box of each dyeing machine is provided with a liquor distribution pipe used for conveying liquor to the dye liquor inflow box of the dyeing machine. A liquor distribution electromagnetic valve and a liquor distribution flow valve are installed on each liquor distribution pipe. A vapor outflow pipe is communicated with the rear portion of the rear liquor conveying electromagnetic valve and provided with a vapor outflow electromagnetic valve. The vapor outflow pipe faces a sewage disposal pool and is provided with a water outflow electromagnetic valve. According to the dyeing machine agent distribution automatic operation system, the dyeing machines in a printing and dyeing mill can be automatically operated and managed, manual labor intensity is relieved, and an agent distribution system can be automatically cleaned.