Article aims to trace out the beginning of ritual system and nature of performing various rituals in galo society. The society perform numbers of ritual with a view of maintaining balance with nature or to stay away from unwanted incidents and diseases. Traditionally, nyibu is only a person who served as a channel of communication between spiritual world and physical world. Before performing any ritual, nyibu used to study the nature of ritual through chicken liver exam, local grain exam, and egg yolk exam. To gather the desire information, the researcher relies on both primary and secondary sources.