Abstract: An improved apparatus for blow molding and conditioning synthetic resin containers, comprising 2 end walls, to which the permanent molds that jointly constitute one (1) forming mold are locked in a removable fashion, these being movable synchronously between 2 stations, namely an extrusion and a blowing station, powered concurrently in opposite directions by the operating devices with which the apparatus is equipped. Into the forming mold, at the extrusion station, is extruded a tubular element of synthetic resin having notable plastic deformation characteristics which, as a result of compressed air being blown therein, is formed into a corresponding synthetic resin container.