A scan driving apparatus, includes a first scan driving unit coupled to a second scan driving unit, the first scan driving unit receives a first start signal, a first clock signal, a second clock signal, and sequentially outputs the first clock signal as a first scan, and outputs the first boost clock signal as a first boost signal, and the second scan driving receives the first clock signal, the second clock signal, a second boost clock signal, and the first scan signal as a second start signal, to sequentially output the second clock signal as a second scan signal, and sequentially outputs the second boost clock signal as a second boost signal.