An insertion system (10) having a tubular insertion section (20) to be inserted into an inserted body includes an insertion section state detection section (34) that detects state information that is at least a state of the insertion section (20). An attention state detection unit (36) having a threshold value of state information, and detecting an attention state including at least an attention state related to the insertion operation of the insertion unit (20) based on a comparison between the state information and the threshold value； Based on the detection result of the detection unit (36), a state information processing unit (38) that performs processing for outputting attention state information representing the contents of the attention state, and an attention state processed by the state information processing unit (38) And an output unit (18) for outputting information including information.被挿入体に挿入する管状の挿入部（２０）を有する挿入システム（１０）は、挿入部（２０）の少なくとも一部の状態である状態情報を検出する挿入部状態検出部（３４）と、状態情報の閾値を有し、状態情報と閾値との比較に基づいて、挿入部（２０）の少なくとも挿入操作に係る注目状態を含む注目状態を検出する注目状態検出部（３６）と、注目状態検出部（３６）の検出結果に基づいて、注目状態の内容を表す注目状態情報を出力するための処理を行う状態情報処理部（３８）と、状態情報処理部（３８）が処理した注目状態情報を含む情報を出力する出力部（１８）と、を備える。
