Environment-friendly paper packaging box production line and working method thereof

The invention relates to the field of paper product production, in particular to an environment-friendly paper packaging box production line and a working method thereof. The environment-friendly paper packaging box production line comprises a paper smashing area (1), a paper pulp purifying area (2), a paper pulp shaping area (3), a paper pulp roasting area (4), a paper folding area (5) and a gluing area (6). According to the environment-friendly paper packaging box production line, waste paper is recycled, smashed and purified to be prepared into thick environment-friendly paper firstly, dueto the fact that the waste paper contains various impurities, the hardness of the waste paper is far higher than that of common paper, and the waste paper can be directly put into use only by removingharmful substances; the produced hard paper is used for producing packaging boxes. The production line has the advantages of high automation degree, low cost of required raw materials and favorable effect, conforms to the pur