The disclosure discloses an intelligent controller for automatically adjusting slat angles of a window shutter, comprising a controller box and a window shutter. The controller box comprises a body case, a battery, a control board, a motor and a linear bearing, the linear bearing is connected to the motor, a slide rod, which is retractable with respect to the linear bearing, is mounted on the linear bearing, and a rod slot is provided on a side face of the body case. The control board comprises a mainboard, a Hall board and a connection board which are connected in sequence, the Hall board, the connection board and the motor are electrically connected in sequence, and the mainboard is electrically connected to the battery. An interconnecting piece matched with the slide rod is provided on the window shutter, and the slide rod is retractable and slides along the rod slot to control the opening and closing of slats of the window shutter. According to the disclosure, the controller can be used with wireless remote control and mobile APPs to achieve control, which is intelligent and convenient and can greatly reduce the users' labor intensity. It adopts the lithium battery as a power supply and thus is safe and reliable. It is easy for installation and operation without any damage to the window shutter and wall structure and is suitable for self-installation by users.