The invention discloses a structure and a manufacturing method of a novel resonant thin-film thermoelectric converter. A heating resistor, a micro-bridge resonator I and a micro-bridge resonator II are arranged on the same substrate; heat generated and radiated after the heating resistor is powered on causes a temperature rise, an axial pressure stress increase or a tensile stress decrease of the micro-bridge resonator I, leading to a resonant frequency decrease of the micro-bridge resonator I; the micro-bridge resonator II is not affected by the heat radiated by the heating resistor, and the resonant frequency of the micro-bridge resonator II is only influenced by the substrate and the environmental temperature; and the magnitude of an input voltage or current loaded on the heating resistor can be reflected by measurement of a difference value between the resonant frequencies of the micro-bridge resonator I and the micro-bridge resonator II. The heating resistor, the micro-bridge resonator I and the micro-bridge resonator II are manufactured on the same substrate (1), so that a device manufacturing process and encapsulating process are simplified. The manufacturing method is simple, and easy to operate.