The invention provides a dynamic plasma generation device based on modulated radio frequency, and the dynamic plasma generation device is used for solving the technical problem that with respect to an existing low-pressure non-equilibrium discharge plasma generation device, plasma is hard to control by person and is poor in dynamic property. The dynamic plasma generation device comprises a plasma discharge cavity, an annular high-voltage electrode, a vacuum system, a cooling system, a plasma dynamic waveform generator, a modulated radio frequency power supply, a radio frequency adapter, a radio frequency shielding interface and electromagnetic experiment shielding rooms. The annular high-voltage electrode is installed in the plasma discharge cavity, the electromagnetic experiment shielding rooms are fixed on two ends of the plasma discharge cavity, and are connected with the vacuum system, the cooling system is connected with the annular high-voltage electrode and the plasma discharge cavity, the plasma dynamic waveform generator generates a waveform signal, the modulated radio frequency power supply multiplies the waveform signal by a local oscillator signal and amplifies the waveform signal, through the radio frequency adapter and the radio frequency shielding interface connected with the plasma discharge cavity, an amplitude-modulated wave signal is transmitted to the annular high-voltage electrode. The dynamic plasma generation device based on modulated radio frequency can generate dynamic plasma in a certain frequency spectrum.