The invention discloses a displayer and a pixel driving method. The displayer comprises a pixel driving circuit which comprises a first switch element, a second switch element, a third switch element and a fourth switch element, the first switch element has a first end, a second end coupled to a first node and a light-emitting element, and a control end coupled to a second node, the second switch element has a first end coupled to a first signal source, a second end coupled to the first end of the first switch element, and a control end coupled to a first scanning signal line, the third switch element has a first end coupled to a second signal source, a second end coupled to the second node, and a control end coupled to a second scanning signal line, and the fourth switch element has a first end coupled to a third node, a second end coupled to a grounding end, and a control end coupled to the second scanning signal line.