For realizing integrated test model simulation and dynamic orbit simulation function, establish underwater launch comprehensive test data management platform based on J2EE. Use Java 3D virtual reality technology, analyze the underwater launching model application. At first introduce the Java 3D technology, analyze its advantages, and introduce the underwater launching 3D display model and ballistic gesture dynamic recurrent simulation related technology. Use Java 3D interaction and animation technology to establish the test model displacement and deflection change animation and research test model gesture change curve under varied work situation. Apply the Java 3D virtual technology in virtual model 3D display and ballistic gesture dynamic recurrent simulation of underwater launching. The results show that the Java 3D technology can make the test model more intuitively, clearly and helpful to the test data analysis.