A capsule guiding system (41; 51; 61; 71; 81) comprising: a capsule medical device that is introducible into a subject and configured to take an in-vivo image in the subject; a capsule guiding unit configured to guide the capsule medical device; an image acquisition unit configured to acquire the in-vivo image of the subject from the capsule medical device; a display unit configured to display the in-vivo image of the subject acquired by the image acquisition unit; a storage unit configured to sequentially store guidance information of the capsule guiding unit that is configured to guide the capsule medical device, characterized in that the capsule guiding system comprises: an input unit configured to input instruction information to instruct start of a backward moving of the capsule medical device, and configured to input mark information to be assigned to the in-vivo image displayed on the display unit as position information relating to a target position where the backward moving is stopped; and a control unit (49; 59; 69; 79; 89) configured to control, when the instruction information instructing start of the backward moving is input, the capsule guiding unit such that the capsule medical device backwardly moves on a trajectory based on the guidance information of the capsule guiding unit stored in the storage unit, and configured to control the capsule guiding unit such that the capsule medical device stops the backward moving based on the position information relating to a target position where the backward moving is stopped. a capsule medical device that is introducible into a subject and configured to take an in-vivo image in the subject; a capsule guiding unit configured to guide the capsule medical device; an image acquisition unit configured to acquire the in-vivo image of the subject from the capsule medical device; a display unit configured to display the in-vivo image of the subject acquired by the image acquisition unit; a storage unit configured to sequentially store guidance information of the capsule guiding unit that is configured to guide the capsule medical device, characterized in that the capsule guiding system comprises: an input unit configured to input instruction information to instruct start of a backward moving of the capsule medical device, and configured to input mark information to be assigned to the in-vivo image displayed on the display unit as position information relating to a target position where the backward moving is stopped; and a control unit (49; 59; 69; 79; 89) configured to control, when the instruction information instructing start of the backward moving is input, the capsule guiding unit such that the capsule medical device backwardly moves on a trajectory based on the guidance information of the capsule guiding unit stored in the storage unit, and configured to control the capsule guiding unit such that the capsule medical device stops the backward moving based on the position information relating to a target position where the backward moving is stopped. an input unit configured to input instruction information to instruct start of a backward moving of the capsule medical device, and configured to input mark information to be assigned to the in-vivo image displayed on the display unit as position information relating to a target position where the backward moving is stopped; and a control unit (49; 59; 69; 79; 89) configured to control, when the instruction information instructing start of the backward moving is input, the capsule guiding unit such that the capsule medical device backwardly moves on a trajectory based on the guidance information of the capsule guiding unit stored in the storage unit, and configured to control the capsule guiding unit such that the capsule medical device stops the backward moving based on the position information relating to a target position where the backward moving is stopped.