The utility model discloses a multi-sensor automatic varied power energy-saving streetlamp, which is characterized in that: a storage battery is respectively connected with a time controller and a selection switch, and the time controller and the selection switch are connected with a bulb; and the selection switch is connected with a photoelectric sensor and a sound sensor. The multi-sensor automatic varied power energy-saving streetlamp has the work principle that: the photoelectric sensor and the sound sensor are adopted, peripheral pedestrian flow and material flow environment can be monitored, and the streetlamp can make judgment and automatically adjust the power, so the brightness of the lamplight can adapt to the condition so as to realize the energy conservation. The multi-sensor automatic varied power energy-saving streetlamp can be used for expressway streetlamp, streetlamp in residential area, streetlamp in building stairway, illumination lamp of conference hall, illumination lamp of school classrooms, etc.