A pixel structure is provided. The pixel structure includes a first pixel unit, a second pixel unit and a discharge unit. The first pixel unit includes a first active device and a first pixel electrode. The second pixel unit includes a second active device and a second pixel electrode. Gates of the first active device and the second active device are electrically connected to a scan line. Drains of the first active device and the second active device are electrically connected to a data line. The first pixel electrode is electrically connected to a source of the first active device. The second pixel electrode is electrically connected to a source of the second active device. The discharge unit is configured to set that a voltage of the second pixel electrode is smaller than a threshold voltage according to a driving signal received by a driving line.