The invention discloses a novel vibration energy acquisition circuit. Two capacitors of a detection module are used for replacing a resistor and a diode in a traditional circuit and can also be used for detecting the peak voltage of a piezoelectric plate. As the capacitors are energy storage elements which neither have on-state voltage drop like the diode nor consume energy like the resistor, so that the consumption in the circuit is reduced, and the output voltage is easily increased; meanwhile, the circuit structure can be optimized and simplified, the acquisition time can be greatly shortened, and the acquisition efficiency can be improved as a whole. Besides, the two capacitors of the detection module can transfer charges in an equivalent parasitic capacitor into an inductor and then transfer the charges in the inductor into an energy storage capacitor, so that besides direct extraction of charges in the piezoelectric plate, extraction of charges in the equivalent parasitic capacitor is performed, and the acquisition efficiency is further improved.