The virtual laboratory of digital electronics using mobile virtual reality technology to save to cost of making real laboratory. Mobile virtual reality can use by student to practice digital electronics skill in their home. This study to finds the skill improvement of student in competency digital electronics using virtual laboratory with mobile virtual reality based. Virtual laboratory can help student to feel the real practice of laboratory in everywhere and every time. The feature of virtual laboratory is:(1) enable to do practice digital electronics in every time and everywhere,(2) student can do experiment like in laboratory using android phone,(3) support with many of android phone series. This study uses the method of research and development with waterfall model that have five stages to develop a software application. The results show that the virtual laboratory can help student to improve their skill of digital electronics because easy feature and real time of virtual laboratory.