The invention relates to a method for molding the linear semi-frame blank of composite pressure container, wherein it uses one concave mould and at least two punch channels with different shapes and diameters, to extrude; each punch has same function area on the blank; the first and second channels are processed in similar temperature on the blank; after the third channel, first reducing the temperature of bottom. And it can use small compressor to mold the liner semi-frame blank of composite pressure container with large capacity, to save the cost. |