Abstract: Effects of chlorine on heavy metals distribution at different temperatures are studied with mixed wastes incinerated in a quartz tube by adding organic chlorine (PVC) and inorganic chlorine (NaCl). The results indicate that the chlorine content in wastes has no influences on heavy metals distribution at lower temperature. Only at higher temperature the influences can be detected. When chlorine is contained in wastes incineration, heavy metals will transfer to fly ash or flue gas more easily. The organic chlorine has more impacts on heavy metals transfer characteristics than inorganic chlorine. The chlorine can obviously alter distribution characteristics of the heavy metals that disperse between fly ash and flue gas or between bottom ash and fly ash.