A vehicle wiper device includes a drive device, a drive shaft rotated back and forth about a first axis by the drive device, a wiper arm pivoted back and forth along a wiping surface as the drive shaft rotates back and forth, and a wiper arm biasing mechanism that biases the wiper arm toward the wiping surface. The wiper arm biasing mechanism includes a swing member, a tilting member, and a biasing member. The swing member is integrally pivotal with the drive shaft. The tilting member is supported by the swing member so as to tilt about a second axis. The tilting member includes a wiper fixing portion. The biasing member, which includes a first end supported by the swing member, and applies a biasing force to the tilting member.