In the emerging growing of bilateral exchanges between China and Thailand and the widespread use of Android apps, the study has designed and implemented Chinese-Thai-English translation audible electronic dictionary APP on the Android platform. The application is designed based on Android Studio development environment and it uses Java language and SQLite database. This study creates a local word library from the Thai language corpus in a special way, and solves the problem that SQLite visualization tool processing Thai will appear garbled. The key technology of the system is to use SQL language to inquire word meaning in the created local word library. The system has the features of dialogue translation and photo translation, and it also has the functions of trilingual query translation among Chinese, Thai, and English, and the pronunciation of Thai language by real people. The test shows that the software has certain convenience and practicability.