Speckles of laser scattered by scattering media can be modulated into focused spots when the phase of incident beam is modulated. A method to improve feedback wavefront shaping technique based on golden section method is introduced, and the focusing of beam scattered by scattering media is realized. Compared with the sequential algorithm, the superiority of the golden section algorithm in searching maximum value of the unimodal function is theoretically analyzed, and the scattering focusing process is numerically simulated. The results show that golden section algorithm performs better than sequential algorithm in modulation rate when the total number of modulation segments and the phase modulation precision of a single segment are changed.