Abstract: A dyeing machine including a receiving chamber, a cloth passage disposed in combination with the receiving chamber through which a piece of cloth is inserted and dyed, a jet nozzle suspended above a front end of the cloth passage and controlled to spray a dyeing solution for coloring the inserted piece of cloth, and a cloth guide roller suspended above the jet nozzle and turned to guide the inserted piece of cloth from the front end of the cloth passage through the jet nozzle toward a rear end of the cloth passage, wherein a motor-driven cloth conveyer is mounted within the receiving chamber at a bottom side and controlled to deliver the inserted piece of cloth through the cloth passage; two cloth guide means are mounted inside the receiving chamber adjacent to two opposite ends of the motor-driven cloth conveyer for guiding the inserted piece of cloth from the front end of the cloth passage to the cloth conveyer and from the cloth conveyer to the rear end of the cloth passage, and detector means adapted to c