A wiper system comprising: a wiper blade (2a, 2b) that is arranged on a wiping surface; a wiper arm (1a, 1b) to which the wiper blade is attached; a pivot shaft (4a, 4b) that is installed on a vehicle side and to which the wiper arm is fixed; an electric motor (6a, 6b) that drives the pivot shaft to rotate; and a control device (10a, 10b) that performs operation control on the electric motor based on position information about the wiper blade, the control device having a learning mode that is executed after the wiper arm is attached to the pivot shaft and in which a position of the wiper blade is learned to correct the position information, the learning mode including moving the wiper blade to a predetermined prescribed position, detecting that the wiper blade is located in the prescribed position, and correcting the position information to a value corresponding to the prescribed position, wherein the control device includes: a learning operation start unit that moves the wiper blade to the prescribed position during the learning mode; a blade position check unit that detects that the wiper blade is located in the prescribed position during the learning mode; and a position information learning and correction unit that, if the wiper blade is detected to be located in the prescribed position, corrects the position information to the value corresponding to the prescribed position. a wiper blade (2a, 2b) that is arranged on a wiping surface; a wiper arm (1a, 1b) to which the wiper blade is attached; a pivot shaft (4a, 4b) that is installed on a vehicle side and to which the wiper arm is fixed; an electric motor (6a, 6b) that drives the pivot shaft to rotate; and a control device (10a, 10b) that performs operation control on the electric motor based on position information about the wiper blade, the control device having a learning mode that is executed after the wiper arm is attached to the pivot shaft and in which a position of the wiper blade is learned to correct the position information, the learning mode including moving the wiper blade to a predetermined prescribed position, detecting that the wiper blade is located in the prescribed position, and correcting the position information to a value corresponding to the prescribed position, wherein the control device includes: a learning operation start unit that moves the wiper blade to the prescribed position during the learning mode; a blade position check unit that detects that the wiper blade is located in the prescribed position during the learning mode; and a position information learning and correction unit that, if the wiper blade is detected to be located in the prescribed position, corrects the position information to the value corresponding to the prescribed position. a learning operation start unit that moves the wiper blade to the prescribed position during the learning mode; a blade position check unit that detects that the wiper blade is located in the prescribed position during the learning mode; and a position information learning and correction unit that, if the wiper blade is detected to be located in the prescribed position, corrects the position information to the value corresponding to the prescribed position.