Homo-polypropylene sheets with different orientation structure were prepared by multistage stretching extrusion technology. By changing the number of force assembly elements (FAEs), the shear and extensional stress-induced anisotropic structure were investigated. Wide Angle X-ray Diffraction (WAXD) and Microscope Polarized Fourier Transform Infrared (M-FTIR) results showed the number of FAEs plays a vital role on the tunable crystalline morphologies, which was also confirmed by Scanning Electron Microscopy (SEM) and Polarized Optical Microscope (POM) images. With applying amounts of FAEs, the crystalline and amorphous phases are alternately aligned in the thickness direction. Melting behaviors revealed the force assembly process would enhance the melting temperature, thicker lamellar were obtained during the process. Tensile tests showed enhanced mechanical properties in machine direction (MD) with increasing FAE number, further improvement were observed after annealing at higher temperatures. The Dynamic Mechanical Analysis (DMA) demonstrated large enhancement of storage modulus with increasing FAE number and annealing temperature, moreover, storage modulus in MD was higher than that of transverse direction (TD).