Paper-based composite bottle

A paper-based composite bottle comprising:

• a cap, being of a tubular shape with a closed end and an open end, and having a thread on an inner wall thereof;
• a mouth, comprising a tube and a body top, wherein the body top has a first opening and a second opening, the first opening is less than the second opening in diameter, the tube is closely connected to the first opening, an end of the tube is formed with an annular flange, an outer surface of the tube except the flange is formed with a thread screwing with the cap, and a periphery of the first opening is provided with a connecting ring for connecting with the flange;
• a body, consisted of at least two layers of paper-based composite paper, the at least two layers of paper-based composite paper comprising a first layer of paper and a second layer of paper, the at least two layers of paper-based composite paper being spirally wound and overlapping with each other to form a tubular structure, an inner side of the body being provided with a water-resistant film, a top end of the body being closely connected with the second opening, the first layer of paper and the second layer of paper forming an outermost layer and an inner layer of the body respectively;
• and
• a bottom, made of wood-pulp paper, closely connected with a bottom end of the body to seal the body.