A waterproof vibrating and twinkling LED backlighting device includes: a main body (1), said main body (1) comprises a light-tight, hollow and polymorphous frame (11), and a transparent cover plate (12) installed on top of said frame (11); a circuit element (3), said circuit element (3) comprises a circuit board (31) and a circuit-control element (32) electrically connects with the circuit board (31); at least one light emitting device (4) which electrically connects with the circuit board (31), and its light emitting angle is parallel with the circuit board (31), said light emitting device (4) comprises: at least one Light-Emitting Diode (LED) (41) mounted on the side of the surface of said circuit board (31) and connected electrically with which; a power supply (5); a ball-rolling switch (6) electrically connects with the circuit element (3); and a transparent encapsulation body (2) filled inside the main body (1) to cover the circuit element (3), power supply (5) and ball-rolling switch (6).