The invention discloses an electricity loss prevention self-starting system of a hybrid electric vehicle and a control method thereof. The system mainly comprises a wireless transceiving module, an SOC module, a storage battery, a controller, an oil tank oil level sensor, a fuel pump controller, an engine and a double-rotor motor, wherein the controller is respectively connected with the wireless transceiving module, the SOC module, the storage battery, the oil tank oil level sensor and the fuel pump controller through wire harnesses. The system has two working modes of the fuel-saving mode and the battery protection mode and can meet different charging working conditions; the system effectively solves the problem of power loss of the storage battery under the long-term condition of the hybrid electric vehicle, two working modes are set to meet different requirements of a vehicle owner, the fuel cost of the vehicle owner is reduced to the maximum extent on the basis of ensuring that the storage battery does not lose power in the fuel-saving mode, the residual electric quantity of the storage battery is maintained in the optimal state under the battery protection mode, and the service life of the storage battery is prolonged.