Abstract: A structure of a plastic container having a hollow flange, a mould thereof and a method for manufacturing the same are provided in the present invention. The mould of the plastic container includes a first mould plate and a second plate. The first mould plate has a mould cavity, and the second mould plate has a mould insert. The mould cavity and the mould insert are combined to form a body-forming space and a flange-forming space. The flange-forming space surrounds an end surface of the body-forming space. The mould can feed air into a flange-forming space by an air-supplying pipe and a material-overflowing space during the injection molding of the mould, thereby forming a finished product of the plastic container having a hollow-shaped flange. The structure of the plastic container includes a body and a flange having a closed hollow portion. The plastic container has a better structure strength.