Sound insulation material, sound insulation system and manufacturing method of sound insulation material

The invention provides a sound insulation material (10) capable of improving the sound insulation performance, which comprises a sound insulation board (20) throughout the whole surface, a sound-source perforation board (30) arranged closer to the sound source (2) than the sound insulation board (20) and equipped with through holes (31) for sound absorption and a radiation perforation board (40) at the opposite side of the sound source (2) separated by the sound insulation board (20) and equipped with a plurality of through holes (41) for lowering the radiation sound.The sound insulation board (20) has the shape of reciprocating between the two perforation boards (30, 40).A sound-source air layer (50) and a radiation air layer (60) are respectively formed between the sound-source perforation board (30) and the radiation perforation board (40).A plurality of sound-source joint parts (21) and a plurality of radiation joint parts (22) respectively bonded to the two perforation boards (30, 40) are alternately provided.