For detection of the all-directional angle in the laser warning with the simple structure and stabilized performance, laser direction measurement method based on the polarization code optical fiber antenna was proposed. This method is to lay the polarizing code of the different polarizing eyepiece angle in the different direction. Then, each direction's optical fiber was coupled into a bunch of optical fibers. After the focusing collimation set of lenses injection solution leaning path of rays, the laser incidence direction was obtained through the judgment circuit analysis. In calculating and the simulating the polarizing laser energy attenuation, the solved electric circuit could examine the response electric current peak-to-peak value relation which was caused by the laser when the weakened polarization is biggest and the laser is weakest. The survey requirements were satisfied when the laser angular resolution is 30°. The experiment demonstrates that the smallest recognition voltage is 20 mV in each 20° division's polarization angle when original laser power is from 20 mV to 150 mV, which meets the requirements of all-directional laser direction survey.