Resumen
Pregnancy is something that very important for a mother. Information about interruption of pregnancy which occurs during pregnancy is indispensable especially for pregnant mother. But, that information is minimum information, so that maternal mortality is increase. From that issues then bring out idea for make a tool based on computer that can give information about interruption of pregnancy which help midwifes and obstetricians to handling. For make midwifes adn obstetricians perfomance increase then be made a Expert System Aplication. This aplication based on desktop and use Visual Studio Ultimate 2012 ( Visual Basic.NET) for programming language with database is MySQL. And Forward Chaining method to be used. Interruption of Pregnancy Diagnosis Expert System can produce fast information for midwifes/Obstetricians and right handling for pregnant mother. This Expert System be one of effort that can diminish maternal mortality.Keywords : Interruption of pregnancy, Expert System, Visual Basic.Net, Forward Chaining