The invention relates to the technical field of synchronous control and discloses a circuit for generating clock pulse signal based on alternating current. In accordance with that present invention, anovel circuit for converting an alternating current signal in a power supply network into a frequency-doubled clock pulse signal is provided, as a consequence, after the novel circuit is arranged inthe intelligent product, the output clock pulse signal can be used as the input signal of intelligent products internal counting/timing circuits and other units, therefore, not only can the crystal oscillator circuit unit be removed to avoid the frequency offset phenomenon and timing deviation caused by the working temperature, but also the same clock pulse signal can be obtained in a plurality ofintelligent products connected to the same power supply network, so as to realize the purpose of synchronously controlling a plurality of intelligent products and meet the requirements of intelligenthome. In addition, independent communication modules are not required for each intelligent product, which can reduce the cost, facilitate the volume miniaturization of the product, and avoid the influence of communication interference on the consistency of synchronization control.