Abstract: The metals on the catalyst particles，flue gas chemical composition and device operation conditions have a great relationship with the fouling of flue gas turbine. The influence of Ca, Fe, Na and other metals deposited on catalyst from feed and the content of SOx in flue gas is getting more and more attention. The simulation of the sintering process in the laboratory was conducted to test the influence of the quantity of metal elements, P oxides and SOx on adhesion and sintering of the catalyst particles, which is considered to be the reason for the flue gas turbine fouling. The results show that at SOx atmosphere, with the content of Ca, Fe, Na, and other metals in the catalyst particles increasing, the degree of adhesion and sintering increases, and more metals and sulfur exist in the sintering neck than in fresh catalyst. The influence of P oxides on the catalyst particle sintering is not obvious.