The invention relates to a laser positioning charging pile for supplying power by alternately using the photovoltaic power on wharf and the power on power supply network, and belongs to the technical field of charging pile application. A power supply board is installed at the center of the highlands on the wharf. On the left of the power supply board, the electrical currents generated by solar cells are used for supplying power to a diverter through a photovoltaic module, a power distribution room B and the power supply board; on the right of the power supply board, the electrical currents outputted from the power supply network are used for supplying power to the diverter through conductive wires B, a power distribution room A and the power supply board. The electrical currents outputted from the diverter are divided into two shares. One share of electrical current transmitting towards the right is inputted to the socket A of input currents through conductive wires A, then the electrical currents are transmitted the to the socket A of output currents through conductive wires A and a control circuit for supplying power to users, and the electric current flow passing through the control circuit is displayed on a display screen through information transmission lines. The other share of electrical current transmitting towards the left is inputted to an energy storage battery through the conductive wires A and the socket B of the input currents for supplying power to a photosensitive self-controlled switch and a laser generator. The laser generator emits bright lasers.