Many people cooperate for creating something new. It is important for the team’s perfomance to build a trusting relationship. It is necessary for building the trusting relationship to know the present state of the team. People are able to understand other people’s friendship and hierarchical relationship from their talk. We propose an estimation system of people’s friendship and hierarchical relationship. People’s uttered sentence types are used to estimate the two relationships. The types are identified from meanings of auxiliary verbs and particles that are included in a sentence. We experimented confirmed that this system is efficient to estimate the two relationships.