SEALING STRUCTURE FOR VEHICLE DOOR

A sealing structure for a vehicle door includes: a side-door opening provided on a vehicle; a sliding door provided to be shiftable between a closed position and an open position; and a second sealing member provided at the side-door opening. In the second sealing member, when the sliding door is placed at the closed position from the open position, a first lip portion moves toward the sliding door and comes into contact with the sliding door to prevent the entry of water into the vehicle from between the side-door opening and the sliding door. When the sliding door is placed at the open position from the closed position, the first lip portion moves away from the sliding door.