The invention relates to an integrated device for vibration absorption and vibration energy collection, which relates to the technical field of vibration control and energy collection. The device of the invention comprises a dynamic vibration absorber with adjustable stiffness and a vibration energy collecting module. The rigidity adjustable dynamic vibration absorber consists of an elastic element 4, an adjustable depth bolt 1 and a mass 7; The vibration energy acquisition module is composed of a PVDF piezoelectric thin film power generation element 3, an energy acquisition interface circuit8 and a load 9. The adjustable depth bolt 1 fastens the resilient element 4 by means of the M6 nut 2; The mass 7 can be fastened to both ends of the resilient element 4 by means of connecting bolts 5and M4 nuts 6; The PVDF piezoelectric thin film power generation element 3 is attached to the upper and lower surfaces of the elastic element 4, and is connected to an energy collection interface circuit 8 through two wires, and the other end of the energy collection interface circuit 8 is connected to a load 9. The invention makes up for the shortcomings of poor vibration damping effect of the passive vibration absorber, the limitation of application occasions, the narrow frequency band and the like, fully and effectively utilizes the vibration energy, and realizes the integration of the vibration control and the energy collection.