Abstract At a certain temperature and pressure, the dissolution of chlorine in aqueous solution is affected by many factors. It is not enough to consider the equilibrium between chlorine gas and water. The equilibrium of Cl-3 and the salting-out effect also play a key role. Here, in order to further improve the understanding of chlorine gas dissolution, this paper uses industrial factors and measured data to explore the influencing factors of chlorine gas dissolution in different situations.