The title of this thesis is “the Role of Civil Servant Investigator to the case of the demolition of the Dalem Tumenggung or Mangkunegaran Palace in Surakarta”. The aim of this thesis is to explore and analyse the role of the civil servant investigators to investigate, and the punishment for the investigators if the they would not do their job to do the investigation to the case of the demolition of the Dalem Tumenggung or Mangkunegaran Palace in Surakarta. This research is a normative legal research which is focused on the norms of positive legal in the form of state regulation. The historical approach and regulatory approach were used in this research. This research used the secondary datas which consist of primary law and secondary law sources. The datas were collected by interview and literature review. Law reinforcement and cultural conservation theories were used to explain the result of this research. The result of this study shows that the role of the civil servant investigator to the case of the demolition of the Dalem Tumenggung or Mangkunegara Palace in Surakarta will be carried out after receive the order from the police department. The civil servant investigators of the cultural heritage will be punished if they do not do their role as stated in the regulations.