Triaxial test is an important test to study the mechanical properties of soil, and it plays a key role in soil mechanics test. However, it is difficult for beginners to master the basic testing skills in a short time due to the difficulty of sample preparation, complex operation process and long test cycle of triaxial test. Therefore, it is particularly important to develop and use triaxial virtual simulation test to carry out teaching work. The developed triaxial virtual simulation experiment includes two parts:virtual experiment operation and electronic report. Students can be familiar with the structure and operation process of triaxial experiment instrument on the mobile terminal, extend the time and space of experiment teaching, improve the quality and level of experiment teaching and stimulate students’ learning enthusiasm under the premise of low cost, low consumption and no potential safety hazard. In order to obtain more real soil mechanical properties and parameters through virtual triaxial test simulation, the big data prediction function of mechanics and constitutive parameters of sand is integrated into the triaxial virtual simulation test. Students are familiar with the test operation process, and can deeply understand the correlation between mechanical properties and physical properties of soil, so the two courses of soil mechanics for undergraduates and geotechnical engineering test for postgraduates, and good teaching effect is achieved.