In this paper, reported is influence of the electrical poling conditions on the electroinduced second order nonlinearity in fused silica. It is found that the second harmonic generation in fused silica caused by electrical poling at elevated temperature is dependent upon the electrical poling temperature and voltage. By poling glasses with a certain voltage, the SHG intensity acquires a maximum value at a moderate temperature, while the SHG intensity increases with the rise of poling voltage and reaches the saturation gradually when the poling temperature is fixed. The experimental results can be explained reasonably by the dipole orientation model for the electroinduced second order nonlinear polarization in glasses.