Abstract: In order to avoid the distort of the edge area of the image from the acquired data through a fisheye lens, a simple method of combining a mobile phone camera and a linear polarizer was adopted in this study. The method was used for theoretical analysis and practical verification, and data on the distribution of the atmospheric polarization pattern and the position of the neutral points were obtained. The results show that the deviation of the altitude angle between the actual measured the area of the neutral point and the result of theoretical simulation is 2.4°±2.6°; the deviation of the azimuth angle is 1.4°±0.8°, which proves the feasibility of the measurement method. As the increasing of the clouds in the sky, the image of the polarization pattern distribution of sky light will be distorted, especially the polarization angle image. However, it is still possible to determine the position of the neutral points, thereby determining the navigation reference line, and providing a reference for polarized bionic navigation of sky light. The research can also be used to determine the position of the sun, achieve self-orientation, and navigation positioning. The method used in this research has the advantages of easy operation and portability. This method reduces the cost of sky light polarized bionic navigation to a certain extent, and improves the civilian value.