The uplink laser communication signal from a submerged platform to a satellite is simulated using Monte Carlo method with certain communication system parameters and reasonable channel parameters.The temporal and spatial distributions of received signal and the relations between signal and telescope′s field of view are analyzed.The signal to noise ratio of the receiver is calculated,which educes the optimized field of view of 3° and sample time slot of 15 μs.Then the error probability of the communication system is computed for laser pulse position modulation (PPM) and maximum likelihood detection.The results show that the error probability is below 10－4 when horizontal distance from satellite to laser signal center is less than 5 km.Consequently,the uplink laser communication between a submerged platform at 60 m depth and a satellite can be achieved under slightly severe environment.