A painting system having improved productivity achieved by optimizing the number and arrangement of robots in a painting booth. A painting system (1) in which a painting robot (6) and an opener robot (4) can pass each other w ithout interference on a first travel guide rail (3) and a second travel gui de rail (3). The first travel guide rail (3) is placed at a lower position t han the second travel guide rail (3). The painting robot (6) is placed on th e first travel guide rail (3), and the opener robot (4) is placed on the sec ond travel guide rail (3).
