Abstract: Throughput of pipeline and outlet temperature are two important operating parameters with uncertainty, which has significant impact on pipe-gelled-like flowing risk, and their probability distribution model is an essential basic information to analyze the pipe-gelled probability distribution.With the method of moments, parameters estimation is made on transportation throughput and outlet temperature of Puyang Initial Pumping Station in ZhongLuo Oil Pipeline at stable operating circumstances in 2006, and Kolmogorov-Smirnov single sample test method is made on non-parameter distribution test.Resultsshow that normal distribution can preferably describe probability distribution of throughput and outlet temperature after pumps are divided into groups according to pump start-up program.