A camera system for monitoring an inside of a body, which reduces an influence of a high-frequency noise, and has high reliability and ease of use is realized. The camera system for monitoring an inside of a body includes a camera support tube (13) formed of a conductive material, a metal spring (191) causing the camera support tube (13) to be grounded, a support-tube joining unit (14) joining the camera unit (11) and the camera support tube (13), and a control system (3) including a display (18).
