During the exploitation process, quite serious sulfur deposition happened in some gas well of carbonatite occurred, even paused the production.It becomes important to make accurate prediction and effective management on sulfur deposition of gas well.A new analytical model is made in which the solubility of the sulfur is the function of temperature, pressure and flow pattern are coupled with temperature and pressure, and particle force analysis is applied to predict sulfur deposition in gaswell with higher sulfur content exploitation process.The prediction result is accord with practical situation, which means the new model can be used as the basis of design, such as desulfurizing treatment design, well cleanout operating design, well completion optimization design, and exploitation rate design.