The experiment studied the parametric design of material transfer metering mechanism of extrusion molding machine of straw packaging container. Using screw conveyor feeding mechanism, the quantitative measurement was realized by screw metering to control the material feeding. For example, the production of a straw packaging container with a bowl diameter of 120 mm and a height of 55 mm required the material volume to be 41 000 mm3, according to the design requirements of material transfer metering mechanism, the screw diameter D was 56 mm by the formula. The finite element software was used for parametric design of screw conveyor feeding mechanism, including characteristic design for variable parameters such as screw diameter and screw pitch, namely, the constraint relationship between each shape feature, achieving constraint linkage between the model building and the modification process. The designed extrusion material transfer metering mechanism of straw packaging container had simple structure and high reliability which met the requirement of extrusion process. The parameterized design method can improve the quality of a variety of modeling of packaging products and shorten the product development cycle. Parametric design can help screw moulding process in form of program implementation and carry out comparison of multiple solutions, which can provide reference for the fabrication of energy saving and efficient extrusion machine for packaging container, and for the development of equipment and production lines suitable for dry packaging container production.