A windshield wiper device is provided that enables high-precision installation of retaining members in a short time. The wiper device includes: a first pivot and a second pivot connected to a wiper arm; a drive unit for rotating the first pivot; a connecting unit connected to the second pivot and the drive unit for synchronously rotating the two pivots; and a first retaining member and a second retaining member for securing each of the pivots to the vehicle body. The second retaining member includes: a body portion for rotatably supporting the second pivot; and three support portions protruding from the body portion. The first and third support portions include: a fixed portion secured by bolts; and a locking pin disposed on the fixed portion for engaging with the vehicle body.