Solubility of chlorine in hydrochloric acid solution was studied,effect of hydrochloric acid concentration and temperature on the solubility were investigated.Result showed that solubility of chlorine increased with the decrease of hydrochloric acid concentration when its concentration was lower than 0.5 mol/L.On the other hand,when hydrochloric acid concentration was larger than 0.5 mol/L,the solubility of chlorine was increased with the increase of hydrochloric acid concentration.Solubility of hydrochloric acid was decreased with the increase of temperature.