To improve an operation mechanism for panel-shaped members in opening roof structure of vehicle.

Two movable panel-shaped members 2, 3 can be moved between a function position juxtaposed to each other in the same plane and a position superimposed in parallel to each other. Each of the panel-shaped member 2, 3 cooperates with a guide way 5 in the side part extending in a moving direction in parallel through guide members 9, 10, 16. A connecting pin 24 is arranged on the first panel-shaped member 3 and is engaged with a bent guide track formed in the second panel-shaped member 2. The bent guide track is formed so that a force component in the direction intersecting the guide way 5 acts on the connecting pin 24 when the second panel-shaped member 2 is moved. The guide way 5 is provided with an intersection guide way part 23 connected with the guide way 5.