A coating determining device of a coating head for determining a coating state of the coating head, comprising: a coating head having a plurality of nozzles for ejecting paint and being configured to eject the paint out of the nozzles so as to coat a workpiece with the ejected paint while moving in a direction, the coating determining device comprising an image acquiring unit for acquiring an image of the coated workpiece; and a determination unit for determining, based on the image acquired by the image acquiring unit, whether coating the workpiece is implemented normally, wherein: the coating head comprises a control unit for controlling ejection of the paint at the plurality of nozzles for each nozzle, the control unit cooperates with the coating head to move in a direction, and applies to the workpiece with a pattern for determination for determining whether there is an ejecting defect for the paint using the plurality of nozzles comprised by the coating head, and the determining unit is configured to determine, based on an image of the workpiece coated with the pattern for determination, whether coating the workpiece is implemented normally and to send to a management device a determination result as to whether coating defect occur; and the coating head is provided with a plurality of nozzle rows (34a, 34b) in a direction orthogonal to the direction, the nozzle rows (34a, 34b) each including a predetermined number of nozzles arranged in a direction inclined relative to the direction, the pattern for determination at least comprises a plurality of baselines (MCL; SCL) configured in a 2-dimensional shape and extending along the direction, and when the coating head is moving in a direction, the control unit, while switching the nozzles, coats the plurality of baselines (MCL; SCL) onto the workpiece by continuously ejecting the paint baselines from any one of the predetermined number of nozzles comprised by each of the plurality of nozzle arrays. a coating head having a plurality of nozzles for ejecting paint and being configured to eject the paint out of the nozzles so as to coat a workpiece with the ejected paint while moving in a direction, the coating determining device comprising an image acquiring unit for acquiring an image of the coated workpiece; and a determination unit for determining, based on the image acquired by the image acquiring unit, whether coating the workpiece is implemented normally, wherein: the coating head comprises a control unit for controlling ejection of the paint at the plurality of nozzles for each nozzle, the control unit cooperates with the coating head to move in a direction, and applies to the workpiece with a pattern for determination for determining whether there is an ejecting defect for the paint using the plurality of nozzles comprised by the coating head, and the determining unit is configured to determine, based on an image of the workpiece coated with the pattern for determination, whether coating the workpiece is implemented normally and to send to a management device a determination result as to whether coating defect occur; and the coating head is provided with a plurality of nozzle rows (34a, 34b) in a direction orthogonal to the direction, the nozzle rows (34a, 34b) each including a predetermined number of nozzles arranged in a direction inclined relative to the direction, the pattern for determination at least comprises a plurality of baselines (MCL; SCL) configured in a 2-dimensional shape and extending along the direction, and when the coating head is moving in a direction, the control unit, while switching the nozzles, coats the plurality of baselines (MCL; SCL) onto the workpiece by continuously ejecting the paint baselines from any one of the predetermined number of nozzles comprised by each of the plurality of nozzle arrays. the coating head comprises a control unit for controlling ejection of the paint at the plurality of nozzles for each nozzle, the control unit cooperates with the coating head to move in a direction, and applies to the workpiece with a pattern for determination for determining whether there is an ejecting defect for the paint using the plurality of nozzles comprised by the coating head, and the determining unit is configured to determine, based on an image of the workpiece coated with the pattern for determination, whether coating the workpiece is implemented normally and to send to a management device a determination result as to whether coating defect occur; and the coating head is provided with a plurality of nozzle rows (34a, 34b) in a direction orthogonal to the direction, the nozzle rows (34a, 34b) each including a predetermined number of nozzles arranged in a direction inclined relative to the direction, the pattern for determination at least comprises a plurality of baselines (MCL; SCL) configured in a 2-dimensional shape and extending along the direction, and when the coating head is moving in a direction, the control unit, while switching the nozzles, coats the plurality of baselines (MCL; SCL) onto the workpiece by continuously ejecting the paint baselines from any one of the predetermined number of nozzles comprised by each of the plurality of nozzle arrays.