Abstract: The working principle of RFDA-HTVP-1750C high-temperature dynamic elastic modulus and damping analyzer was introduced, and the experience of equipment maintenance before, during and after the experiment was shared. Combined with the actual work, the common faults in the use of the analyzer were discussed and specific solutions were given. The related problems of high temperature dynamic elastic modulus testing of materials such as bearing steel, titanium alloy, ceramics, coatings and et al. were discussed. To master the maintenance and fault handling skills of the instrument, can avoid the reaction temperature of carbon and nitrogen alloying, prolong the service life of the instrument, and give full play to the experimental teaching and analysis and testing functions of the instrument.