The present disclosure discloses a common-gate transistor, a pixel circuit, a pixel structure and a display panel, wherein the common-gate transistor includes: a first electrode region, a second electrode region and a third electrode region which are independently disposed, and a common gate region that is in contact with the first electrode region, the second electrode region, and the third electrode region; the common gate region, the first electrode region, and the second electrode region constitute a first transistor; and the common gate region, the first electrode region, and the third electrode region constitute a second transistor.