Based on multi-scattering model，we design an LED transmission system based Monte-Carol simulation model, and study the influence of arriving angle of the received signal and field of view (FOV) of the receiver on the received signal power and the received signal-to-noise ratio (SNR) under different water environments. Under pure water and clear ocean water environments, the received power is mainly distributed at the arriving angle range of 0°-3°, and when the receiver with small FOV (1°), the maximum received SNR can be achieved. While under harbor and coastal water environments, the received power distribution obviously spread, especially for harbor water, the distribution expands from 0° to 90°. Under coastal water environment, when the receiver FOV is set at 8°, the maximum SNR is achieved. Under harbor water environment, when the receiver FOV increases to 30°, the maximum SNR is achieved.