This paper uses the multiple scattering model based on Monte Carlo simul ation to study the transmission characteristics of ultraviolet (UV) communication in non-common-s cattering volume.In the model,the variation of the average scattering times of U V light in the atmosphere,the variation of the path loss along with the transmission distance, the change of the pulse response time delay and the variation of the pulse response curve with the visibility are analyzed.The results show that unlike the case of a common scattering volume,at least twice atmospheric scatterings are required to reach the receiving end in non- common-scattering volume model.The path loss and the impulse response time dela y with the same transmission distance for the non-common-scattering volume transmission model are much higher than those the common scattering volume transmission model.The impulse response curve with visibility by normalization can be obtained.It can be found that the time delay of the impulse response of the atmospheric transmission of the UV com munication in non- common-scattering volume is not changed with the visibility,but the peak height of the impulse response increases with the increase of the visibility.