DOOR OPENING/CLOSING DEVICE AND OPERATION DETECTION DEVICE

A vehicle door opening/closing device (1) controls opening/closing of a sliding door based on user operations performed by being in contact with an operation handle. The vehicle door opening/closing device (1) includes: a detection unit that detects a contact state of a user with respect to the operation handle; a door driving unit (70) that drives opening/closing of the sliding door; and a door control unit (80) that determines that a swipe operation is a user operation under the condition that the swipe operation and a tap operation have been detected by the detection unit. The door control unit (80) controls the door driving unit (70) based on the user operation thus determined, and opens/closes the sliding door.