The invention relates to a manufacturing method of gas plug equipment in the HDPE winding structure pipe acceptance check process. The manufacturing method includes the steps that firstly, a bottom die is wound around a die, the bottom die is cut off after demolding, a circle with the same size of a prefabricated finished gas plug is cut off from the upper edge of the overall bottom die face, four strip-shaped polyethylene bottom die material blocks with the length smaller than the radius and the width being about ten centimeters are cut off, the four material blocks are connected in pairs through a welding gun in the manner that the crossed tangent planes and a circular face are combined, and a sub opening is wounded; and the size is smaller than the size of the prefabricated finished gas plug, the manufactured circular face is placed in a pipe insertion opening, connection is finished, lead screws are added to the upper edges of the four polyethylene material blocks for supporting, and finally two faces are selected from the divided four faces to be used for being additionally provided with a gas-pressure meter and an intake valve respectively. The manufacturing method has the advantages that the cost is reduced; and in actual application, products are portable, easy to carry and not prone to damage, it is avoided gas leaks due to the device problem in the experiment process, working efficiency is improved greatly, and time is saved.