The invention belongs to the field of petroleum engineering, and specifically relates to a full electric driving downhole safety valve. The full electric driving downhole safety valve includes a downhole safety valve mechanism and a down safety valve control system, wherein the downhole safety valve mechanism includes an electronics bay module, a transmission control module, a motion conversion module, a magnetic coupling and spring module, and a valve module; and the downhole safety valve control module includes a downhole comprehensive unit and an on-hole comprehensive unit. The full electric driving downhole safety valve has the advantages that the full electric driving downhole safety valve can greatly improve the response speed of the safety valve in the emergency situations, due to the structural characteristics that moving parts of the electric driven safety valve are mounted in a sealing cabin, the working conditions of the key structure are improved, operation of equipment ismore reliable, a magnetic coupling device is adopted, well hydraulic pressure is isolated, a power source is electric power, the deep limit is small, a hydraulic power unit and a hydraulic pipeline are not needed, and the system cost is lowered.