We propose an internal monitoring camera system with excellent work efficiency. A cable (12) having one end connected to the imaging unit, a first auxiliary tool (8) attached to the other end of the cable (12), and a held part (8g) provided on the first auxiliary tool (8) ) And a rod-shaped part (7x) connected to the holding part (7g), and the held part (8g) is held by the holding part (7g), and one end is in the body. And a second auxiliary tool (7) for pulling out from the body through the inside of the tubular device (6) introduced into the body.作業効率に優れた体内監視カメラシステムを提案する。一端が撮像部に接続されたケーブル(12)と、ケーブル(12)の他端に装着される第1補助具(8)と、第1補助具(8)に設けられた被保持部(8g)を保持する保持部(7g)および該保持部(7g)に接続する棒状部(7x)を含み、被保持部(8g)を、保持部(7g)に保持させた状態で、一端が体内に導入された管状器具(6)の内部を通して体内から体外に引き出すための第2補助具(7)とを備える。