A painting device equipped with a painting head having multiple nozzles that discharge a coating material, the painting device omprises: a supply passage that supplies the coating material to the painting head; and a return flow passage that returns, to the upstream side of the supply passage, the portion of the coating material supplied to the painting head that was not discharged from the multiple nozzles possessed by the painting head, wherein, the supply passage, the painting head and the return flow passage constitute a coating material circulation passage; the coating material circulation passage is divided into multiple segments, each of which contains at least one of the multiple circuit component parts arranged in the coating material circulation passage or the painting head; characterized in that the coating material circulation passage is divided into the multiple segments by arranging switching valves (66, 67, 68, 71) at multiple locations, wherein the switching valves (66, 67, 68, 71) include a first valve part (66a, 66b, 67a, 67b, 68a, 68b, 71a, 71b) which is opened when, between two adjacent segments, the coating material is to be passed from the segment located upstream to the segment located downstream in the coating material supply direction; a second valve part (66c, 67c, 68c, 71c) which is opened when cleaning liquid or air is to be fed into one of the two adjacent segments; and a third valve part (66d, 67d, 68d, 71d) which is opened when the cleaning liquid or the air that has flowed through one of the two adjacent segments is to be discharged to the outside, so that the coating material circulation passage allows the multiple segments to be cleaned individually. a supply passage that supplies the coating material to the painting head; and a return flow passage that returns, to the upstream side of the supply passage, the portion of the coating material supplied to the painting head that was not discharged from the multiple nozzles possessed by the painting head, wherein, the supply passage, the painting head and the return flow passage constitute a coating material circulation passage; the coating material circulation passage is divided into multiple segments, each of which contains at least one of the multiple circuit component parts arranged in the coating material circulation passage or the painting head; characterized in that the coating material circulation passage is divided into the multiple segments by arranging switching valves (66, 67, 68, 71) at multiple locations, wherein the switching valves (66, 67, 68, 71) include a first valve part (66a, 66b, 67a, 67b, 68a, 68b, 71a, 71b) which is opened when, between two adjacent segments, the coating material is to be passed from the segment located upstream to the segment located downstream in the coating material supply direction; a second valve part (66c, 67c, 68c, 71c) which is opened when cleaning liquid or air is to be fed into one of the two adjacent segments; and a third valve part (66d, 67d, 68d, 71d) which is opened when the cleaning liquid or the air that has flowed through one of the two adjacent segments is to be discharged to the outside, so that the coating material circulation passage allows the multiple segments to be cleaned individually.