The biaxial stretching film of polyamide 6 (PA6) is widely used for food and industrial products packagings, because it has good physical properties, such as high toughness, hard wearing properties and gas barrier properties. It is expected to improve film formability and performance for larger market. So, in this research, both the stretching methods and PA6 blends were investigated in terms of dynamics and structure development for biaxial stretching films. �@ There are three different stretching methods which can produce polyamide 6 films, namely the simultaneous biaxial stretching, the sequential biaxial stretching, and the double bubble tubular stretching. There is no report which described the difference among three stretching methods and film properties, so it was not clarified why the film has big difference in its properties. For this reason, we studied the higher order structure and stretching behaviors of three stretching methods. As a result, the sequential biaxial stretching shows high stretching effect and molecular orientation in the transverse direction. In the simultaneous biaxial stretching, the molecule orientation was equal both in the machine direction and in the transverse direction of the stretched plane. The double bubble tubular process produced good balance film and equal orientation in any directions in terms of the phase difference in plane of film. Also, as blends of PA6 improved the properties of easy straight line cut and high barrier by blending meta-Xylene diamine (MXD6), they were studied to develop the biaxial stretching film of polyamide which has good stretchability and good physical properties. Furthermore, blend effects of MXD6 to PA6 and dynamics analyses were investigated.