In light of the disadvantages of the traditional frequency conversion technology, a two-phase continuous plugged-type AC conversion power supply is proposed, which has advantages such as low harmonic content, high power factor, few power devices, simple control and low cost. Based on the plugged-type control strategy, the input of two-phase grid voltage is blocked and spliced to realize frequency modulation. Meanwhile, SPWM chopper modulation technique is used to chop the voltage after blocking, thus realizing voltage regulation. This control strategy was verified by a DS104 real-time control system, and it was realized by means of STM320F2812. Moreover, the main power circuit and signal conditioning circuit were designed, the relevant frequency conversion experiments were completed, and typical experimental results were obtained. The experimental results were consistent with the theoretical analysis, which confirmed the correctness and feasibility of the proposed two-phase continuous plugged-type frequency conversion power supply. At the same time, the research in this paper provides theoretical reference and experimental guidance for the improvement of energy conservation and conversion modes which are suitable for household appliances and small- and medium-capacity exhaust equipment used in factories.