Light sensing circuit and driving method thereof, display panel and display device

The invention discloses a light sensing circuit and a driving method thereof, a display panel and a display device, belonging to the technical field of display. The light sensing circuit comprises that: the gate of a first transistor is electrically connected to a first control terminal, the first pole is electrically connected to a first voltage terminal, and the second pole is electrically connected to a first node; the gate of a second transistor is electrically connected to the first node, the first pole is electrically connected to a second voltage terminal, and the second pole is electrically connected to the first pole of a third transistor; the gate of the third transistor is electrically connected to a second control terminal, and the second pole is electrically connected to a data line; the gate of a fourth transistor is electrically connected to a third control terminal, the first pole is coupled to the first node, and the second pole is electrically connected to a third voltage terminal; the first