The invention relates to an energy-saving type intelligent fire water cannon which comprises a fire water cannon body, a power device, a monitoring device, a controller and an electric energy device;the monitoring device is used for monitoring a running state of the fire water cannon body and is connected with the power device; the electric energy device consists of a power supply general supply,a motor and a driving circuit; and the driving circuit and the power supply general supply are electrically connected with at least one group of relays or MOS pipes in front to achieve general on-offof the power supply. When the fire water cannon body is standby, the motor and the driving circuit have the highest power consumption which generally accounts for 2/3 of the standby power consumption, while the group of relays or MOS pipes are additionally arranged in front of the motor and the driving circuit to achieve the general on-off of the power supply in the part, and act as a main switchof the power supply at the part, so that energy conservation in standby time period of the fire water cannon is realized, and the service lives of the driving circuit and the motor are prolonged.