The disclosure provides a multiplexer and a display panel. In the multiplexer, a first and second output ends are respectively connected to a first and second data transmission lines. Control ends of a first and second switches are respectively coupled to a first and second control lines. First ends of the first and second switches are respectively coupled to the first and second output ends. The first data transmission line, the second data transmission line, the first control line, and the second control line extend along a first direction, and the first output end and the second output end are disposed on opposite sides of the first control line.