Abstract: Mohe-Daqing Oil Pipeline spans areas with several rivers and streams. Once it is broken due to frost heaving, or damaged by the third party or by flood, the spilled Russian Oil may flow to and thereby pollute the waters. Based on the analysis of Russian Oil's physical properties, spectrophotometry and silica gel adsorption methods are used to identify the characteristic absorption peak and the relationship of mass fraction and oil film thickness as well as the non-linear relationship of mass fraction and temperature of Russian Oil in water. Causes thereof are analyzed. Indoor simulation is made on the diffusion of Russian Oil in such conditions as room temperature, no wind and clean waters. As a result, dissolution and diffusion parameters of Russian Oil in water are understood, providing data to the production management department for contingency planning and accident treatment.