The equipment is used to measure the slag corrosion resistance of refractory products. The equipment uses medium frequency induction heating steel block, after the steel block is melted, the slag is put into the furnace. It can measure the temperature of molten steel accurately and continuously. The crucible method (making the whole crucible of refractory materials or building the crucible with multiple samples) and immersion test can be carried out, and the crucible method and immersion test can also be carried out at the same time. The test tube with multiple samples (four 40 × 40 × 230 samples suspended in the slag liquid for planetary motion) can be carried out at the same time. It has water cut-off protection function.