The Ultraviolet (UV) communication network which is based on the space division multiplexing technique will be faced with the problem of inter-link multi-user interference. For a set of typical communication link models, based on the theory of multiple-scattering, and Monte Carlo method was used to analyze the relationships between the probability of error and the distance from transmitter to receiver, the angle between two links, transmitters′ elevation angle and receivers′ elevation angle, respectively. The results show that, the probability of error increases with the increase of the distance from transmitter to receiver, the communication distance should be less than 120 meters when emission power is 100 mW; with the increase of the inter-link angle, the probability of error decreases first, then remains the same gradually, and then increases, the inter-link angle should be within 60°~120°; the influence of the elevation angle of transmitter and receiver on the probability of error is almost the same, that is the probability of error decreases first and then increases rapidly with the increase of the elevation angle, the minimum probability of error at 15°.