The invention discloses a broadband vibration energy collector combined with self-tuning and non-linearity. The energy collector is provided with an L-shaped base (9) having a vertical edge and a horizontal edge, wherein one end of a rectangular piezoelectric cantilever beam (6) is fixed on the top rim of the vertical edge of the L-shaped base, and an annular cylinder (1) is symmetrically fixed onthe upper surface of the other end of the rectangular piezoelectric cantilever beam (6); a piezoelectric beam magnet (7) is fixed on the lower surface of the rectangular piezoelectric cantilever beam(6); a base magnet (8) is fixed on the horizontal edge of the L-shaped base, and is placed opposite to the position of the piezoelectric beam magnet (7) at an interval; a cylinder separator (5) is arranged in the center of the annular cylinder (1); two spherical mass blocks (4) are symmetrically arranged on two sides of the cylinder separator, and are connected with one end of an annular spring (3) respectively; the other end of the annular spring is fixed on a cylinder cover plate (2), and the cylinder cover plate is fixedly connected with the tail end of the annular cylinder (1). The devicecan solve the problem of narrow band of an existing self-tuning broadband vibration energy collector.