The invention discloses an energy-saving streetlamp used at a river bank. The energy-saving streetlamp comprises a lamp pole, a support plate, a solar cell panel, a bulb, an L-shaped plate, a storagebattery, a wind power generation device, a transverse shaft, fan plates, a baffle, a first helical gear, a second helical gear, a vertical shaft, a third helical gear, a fourth helical gear, a rotating shaft and a second generator. The energy-saving streetlamp is provided with the solar cell panel and the storage battery; by means of the solar cell panel, solar energy is converted into electric energy and stored in the storage battery, the solar energy is fully utilized, and the energy is saved; by means of the wind power generation device, wind power on the bank can be fully utilized for generating electricity and storing the electricity, and the energy is further saved; by means of cooperation among the fan plates, the transverse shaft, the first helical gear, the second helical gear, the vertical shaft, the third helical gear, the fourth helical gear and the second generator, kinetic energy of water is fully utilized for generating the electricity, and the energy is saved; multiplepower generation exist at the same time; the utilization rate of the natural energy is increased; and the energy is greatly saved.