Provided are a scan driving circuit and a display device. Each driving unit comprises a first signal input end receiving a trigger signal or a former stage scan signal, a second signal input end receiving a latter stage scan signal, a first signal output end and a second signal output end connected to a multiplexing circuit; each multiplexing unit comprises a first signal receiving end and a second signal receiving end respectively connected to the first signal output end and the second signal output end, a third signal receiving end receiving the former stage scan signal, a fourth signal receiving end receiving the latter stage scan signal, a fifth signal receiving end receiving a clock signal, a scan signal output end outputting a scan signal for simplifying the circuit and saving the space, which is beneficial for the narrow frame design of the display device.