The invention discloses an elevator energy-saving system based on a super capacitor. One end of a first IGBT is connected to one end of an energy storage capacitor of an elevator integrated machine, the other end of the first IGBT is connected to a high voltage bus converter and one end of a braking resistor, the other end of the braking resistor is connected to one end of a second IGBT, the otherend of the second IGBT is connected to the other end of the energy storage capacitor and one end of a third IGBT, the other end of the third IGBT is connected to the other path of the high voltage bus converter, the two outputs of the high voltage bus converter are connected to several sets of buck-boost voltage regulators respectively, the several sets of buck-boost voltage regulators are respectively connected with several sets of super capacitor modules and connected with one ends of first relay contacts, the other ends of the first relay contacts are connected with a sine wave inverter, the other end of the sine wave inverter is connected to one ends of second relay contacts, the other ends of the second relay contacts are connected to a lighting load and one ends of third relay contacts, and the other ends of the third relay contacts are connected to the mains. The elevator energy-saving system reduces the elevator energy consumption.