Display and storage box

A display and storage box comprising:

• a box having a bottom plate having four sides, the bottom plate having a first side plate and a second side plate respectively extending upward from two opposite sides of the bottom plate, a third side plate and a fourth side plate respectively extending upward from the other two opposite sides of the bottom plate, a space being defined between the bottom plate, the first side plate, the second side plate, the third side plate and the fourth side plate, two first positioning plates extending from two sides of the third side plate, two second positioning plates extending from two sides of the fourth side plate, the two first positioning plates respectively fixed to the first and second side plates, the two second positioning plates respectively in contact with the first and second side plates, two respective distal ends of the two second positioning plates being in contact with two respective distal ends of the two first positioning plates, a sum of lengths of the first and second positioning plates being equal to a length of each of the first side plate and the second side plate;
• wherein when the fourth side plate is pivoted downward and flattened, an opening is formed between the fourth side plate and the bottom plate, the opening communicates with the space.