The propagation performance of a low amplitude one-dimensional screening bright soliton in photorefractive media is studied in this paper. Numerical simulations show that, the beam would present linear diffraction in the isotropic media. While in the anisotropic nonlinear media, without taking the diffusion effect into account, the input beam would keep shape and be a line in the transmission direction. The beam would be selfbending when considering the diffusion effect. What′s more, the direction and degree of self-deflection are related to the temperature. At last, The relationship between self-bending distance and the temperature is analyzed. At a special temperature, we can get the biggest distance and the deflection distance can be controlled changing the temperature.