As a basic property of photons, polarization state (SOP) has been widely used in communication, optical coherence tomography, medical diagnosis, remote detection, material analysis and other fields. The polarization controller is the key element in the polarization applications, which can be realized by rotating wave plate and birefringence effect, but the traditional discrete optical components have some problems such as great volume, slow speed and poor reconfigurability. This cover article presents a novel polarization controller on the silicon substrate, which is ultra-compact, large tolerance and easy to regulate. The basic principle is that the horizontal and vertical polarization components of light waves can be converted into each other by using the mode hybrid effect of ridged silicon optical waveguide. By using MZI structure and phase shifter, the energy ratio and phase difference of two polarization components can be controlled, and the conversion between arbitrary polarization states can be realized. Due to the perfect symmetry of its structure, this work has obtained the highest range of polarization extinction ratio (PER) reported so far, and has wide application prospects in related fields.