The resistivity of glass melt is one of the key parameters for designing glass electric melting furnace and electric boosting furnace. In order to test the resistivity of glass melt accurately, figuring out the influences of boundary conditions on the resistivity measurement of glass melt is very important. Based on Ohm’s law, a glass melt resistivity measuring device was constructed in this work, and the influences of feed-in voltage, frequency of alternating current, particle size of sample and filling rate on the resistivity of soda-lime glass melt at 900~1 450 ℃ were discussed. The results show that when the feed-in voltage is 2~10 V, the frequency of alternating current is 1 kHz, the sample particle size is 830~1 700 μm, the filling rate is 80%, and the cooling rate is 2 ℃/min, the errors of the measurement results of resistivity are all less than 1 in each temperature segment. This work provides a reference for the measurement of glass melt resistivity, which is essential to design the electric heating system of electric melting furnace and electric boosting furnace for refractory and volatile glasse production.