Kinetics characteristics of resolving of rock salt of Changshan in dynamic state have been studied by using conductance method and equipment made by ourself. The results show that the quantitative relationship between conductance(L) or concentration (c) of resolving solution in the process of resolving of rock salt and time t ( kinetics equation )is analogous to Langmuir equation for different flows in ambient temperature.Constant E or a increases with the increase of the flow( V ), whereas constant F or b constant decreases. The above 4 constants in dynamic state are smaller than those in static state.