In order to improve the efficiency as well as the reliability of the electric meters installation,the interference fit plug and the plug installation structure was proposed according to the standard Q/GDW 11008-2013(Technical specification for low-voltage metering cabinet). Meanwhile, the standard also specified the temperature rise of the plug. At present, the structure is the main concern during the primary design of the interference fit plug, while the temperature rise is not the consideration. The parameter of temperature rise is usually measured with the end production. The detailed thermal conduction model of interference fit plug and its installation structure was established in this paper. Further, the static thermal of interference fit plug was analyzed with ANSYS. The static thermal analysis contributes to design the parameter of temperature rise for the interference fit plug both in theory and in simulation. With the static thermal analysis, the redesign leaded by the failure of production test can be avoided.