Patent ID: 7234629

Claim:
A packaging box, comprising: a box having a bottom board, a first side board, a second side board, a third side board and a fourth side board, wherein the first side board and the second side board are disposed oppositely, the third side board and the fourth side board are disposed oppositely, the first side board has a first concave folding line and a second concave folding line, and the second side board has a third concave folding line and a fourth concave folding line, both ends of the first side board respectively extend out a first folding edge and a second folding edge, both ends of the second side board respectively extend out a third folding edge and a fourth folding edge, the third side board and the fourth side board respectively extend out a first pressing part and a second pressing part, the first pressing part and the second pressing part respectively have a first embedding part and a second embedding part, the bottom board is disposed with a first embedding hole and a second embedding hole, and after the first folding edge, the second folding edge, the third folding edge and the fourth folding edge are folded, the first pressing part, the second pressing part, the first embedding part, the second embedding part, the first embedding hole and the second embedding hole are used to form the box; and a cover connected to the first side board and having a fifth concave folding line, a sixth concave folding line, a seventh concave folding line and an eighth concave folding line, wherein the fifth concave folding line is disposed corresponding to the first concave folding line, the sixth concave folding line is disposed corresponding to the second concave folding line, the seventh concave folding line and the eighth concave folding line are respectively extended from a connection position of the cover and the first side board outside the cover, the third side board and the fourth side board are folded toward the bottom board, the first side board and the second side board are folded outward along the first concave folding line, the second concave folding line, the third concave folding line and the fourth concave folding line so that the box becomes flat and form an opening of the box, the cover is first folded along the seventh concave folding line and the eighth concave folding line and is then folded along the fifth concave folding line and the sixth concave folding line to cover the opening of the box.