The invention provides a pressurizing electromagnetic and pressurizing piezoelectric combined type gas jetting device. An electromagnetic control part and a piezoelectric control part are arranged in a control device shell. A double-gas nozzle part is arranged in a jetting device shell. The lower end of a pressurizing device shell is connected with the upper end of the control device shell. The lower end of the control device shell is connected with the upper end of the jetting device shell, a control valve base is arranged between the double-gas nozzle part and the electromagnetic control part, and a control valve base is arranged between the double-gas nozzle part and the piezoelectric control part. The center of the pressurizing device shell, the center of the control device shell and the center of the jetting device shell are each provided with an air inlet channel, wherein the air inlet channels communicate with one another. The gas pressurizing efficiency is high, the gas jetting flexibility is high, the requirement for the large-range-power gas jetting amount and the requirement for jetting rule changeability of a system can be met, meanwhile, fuel is used for sealing gas, the problem that the gas leaks through valve needle couple parts can be well solved, and the dynamic property and the fuel economical efficiency of an engine can be effectively improved.