In order to find out the flow direction, phase transformation rule and removal characteristics of Cl element in the sintering process, the removal behavior and influencing factors of Cl element in the sintering process are revealed through theoretical research and combined with sintering cup experiments. The research results show that: The Cl element in the mixture is mainly brought in by the iron-bearing dust, accounting for 84.93%; the removal rate of Cl element is as high as 89.99%, and the coke ratio and alkalinity have a greater impact on the removal rate of Cl element, and the Cl removal rate increases with the increase of coke ratio and decreases with the increase of alkalinity. Cl elements are mainly enriched in dust removal ash and exhaust particulate matter after removal, of which 78.24% of Cl elements enter the head ash; the enrichment of Cl elements in the head ash and exhaust air sol particles is more obvious, and it is mainly in the form of metal chlorides.