The dissolution kinetics of sparingly soluble electrolyte have great significance in solving the engineering problems such as salt refining, pipe fouling and mineral exploitation. The present study focuses on the dissolution kinetics of CaSO4, CaCO3, MgCO3, Ca(OH)(2), and Mg(OH)(2). The conductance method was used to measure the relationship between concentration and time. Two models of dissolution kinetics were developed according to the shrinking core model. The experimental data were successfully correlated using the developed model. The correlation results show that the average relative error of the two developed models were 0.7% and 0.78%, respectively. Meanwhile, compared to conventional models, the new models are more valuable in practical application.