During liquidsolid twophase flow erosion wear, part kinetic energy of solid particle convert into heat energy,it makes temperature of flow component and slurry rise, erosion wear and friction heat accelerate the corrosion rate and the wear rate of flow components material, they speed up the damage of flow component.Under the condition of high speed erosion wear, the friction heat effect should be attracted more attentions.In this paper, a rotary erosion wear test apparatus with temperature measurement system is selfdesigned and developed to carry out realtime measurement of sample temperature during liquidsolid twophase flow erosion wear test. Three holes were machined near the surface, center, and near the back of the sample for erosion wear test, three thermocouples were inserted and connected to the temperature sensor as well as computer through the wires, thus it can online measure and draw temperature curve of different parts of the sample in the process of erosion wear test. The apparatus has many advantages such as simple structure, convenient operation, stable and reliable data, and good visual features. This device can simulate erosion wear working conditions of wet metallurgy, chemical, mining, hydropower and so on, especially measurement and analysis on generation and transfer of sample friction heat as well as its influence on erosion wear characteristics.