The invention discloses a wireless transmission method based on a femtosecond laser and an electric energy transmission device. The flashover discharging between a femtosecond laser transmitter and an electric signal transmitter is collected, the processing is carried out through the wireless transmission technology to obtain stable voltage, which means that the nonlinear phenomenon-filamentation generated by the transmission of a femtosecond laser pulse in the air is used, an electric signal receiving electrode carries out flashover discharging in the femtosecond laser pulse, the voltage pulse of the flashover discharging is filtered and converted into alternating current, and the femtosecond laser pulse is used to carry out far distance wireless power transmission. The peak-peak value of alternating current voltage coupled by a non-contact transformer is reduced to one tenth of the original or even lower, the insulation degree of a back stage circuit can be greatly reduced, and the cost of the back stage circuit is greatly reduced. The output voltage of the invention is direct current voltage which can be used as a power supply by much equipment, and power use requirements in some special conditions such as the wireless transmission of a communication satellite and the power supply of a high speed electric vehicle can be solved.