The invention belongs to the field of aerospaces and heat and mass transferring, and relates to a full-electrical control vector synthetic dual-jet device and a generation method. The device comprises a synthetic dual jet actuator and a signal control system, wherein the signal control system comprises a computer, an analog/digital conversion card and a driving module; the driving module is connected with the synthetic dual jet actuator; and the computer is connected with the analog/digital conversion card. The method comprises the following steps: (S1) the computer generates a periodic voltage signal; (S2) the periodic voltage signal is converted into a digital signal; (S3) the digital signal is amplified through the driving module and then is transmitted to the synthetic dual jet actuator to control a vibration film to do reciprocating vibration; and (S4) two strands of jets formed in two cavities of the synthetic dual jet actuator are discharged from outlets. The full-electrical control vector synthetic dual-jet device can automatically control the jets without adding an extra rotating mechanism, so that the speed sizes and the frequencies of the two jets can be changed, and the vector directions of the synthetic dual jets can be controlled.