To efficiently package a dried laver bundle.

A dried laver bundle packaging device comprises a supporting member 4 to support a lower side of the dried laver bundle 200a with dried laver of the predetermined number is stacked; a compressing device 6 which supports a case 100 in a developed condition, covers an upper plate 101 of the case over an upper surface of the dried laver bundle 200a, and compresses the dried laver bundle 200a; first folding devices 67 which are disposed on both sides of the compressing device 6 to fold the packaging case 100 by a rule of boundaries between the upper plate 101 and the side plates 102 and 102; and second folding devices 7 which are disposed on both sides of the supporting member 4 to fold a rule part of boundaries between the side plates 102 and 102, and flat plates 103 and 104.