Thin plate acoustic meta-material low frequency sound insulation structure

The invention discloses a thin plate acoustic meta-material low frequency sound insulation structure comprising multiple acoustic meta-material structural units (1) which are mutually combined in an array and an integral outer frame (2). Each acoustic meta-material structural unit (1) used for forming the sound insulation peak in the predetermined low frequency range comprises a left side frame (3) and a right side frame (4) which are mutually combined in an array and a high-molecular polymer sheet (5) which is adhered on at least one of the upper and lower surfaces of the integral outer frame(2), the left side frame (3) and the right side frame (4). The invention also relates to a structure for realizing broadband sound insulation within the predetermined low frequency range, i.e. multiple acoustic meta-material structural units (1) are combined into a composite structural unit (7), at least two mass blocks (6) of different masses are placed on the composite structural unit (7), andfinally the composite stru