The visualization of the ultrasonie propagation, interference and flaw can turn these abstraetultrasonie phenomena into visible images using simulation software , which can help students better understandthe knowledge about ultrasonie waves, This paper simulates the ultrasonie propagation under differenttemperature and medium , ultrasonie interferenee and ultrasonie flow using COMSOL, soltware.The theoreticalanalysis indicate that the simulation results are olvious and correet, This provides a strong support for theultrasonie waves study.