A respiration inducing system comprising: an imaging unit configured to capture a respiration image of a patient; a respiration signal conversion unit configured to acquire a respiration signal of the patient by processing, tracking, and analyzing the respiration image of the patient obtained by the imaging unit; a respiration guide unit configured to provide the acquired respiration signal and a guide respiration pattern of a guiding signal together, wherein, while the guide respiration pattern is displayed on an input/output unit, the respiration guide unit displays the acquired respiration signal in real time corresponding to the guiding signal, along with an eye tracking point that moves in real time along the acquired respiration signal; and a respiration determination unit configured to determine whether the acquired respiration signal is suitable for radiation therapy based on information regarding one or more of a respiration period of the acquired respiration signal, a respiration amplitude of the acquired respiration signal, and a respiration pattern of the acquired respiration signal, determine whether the acquired respiration signal is stably maintained, store a first acquired respiration signal related to the acquired respiration signal as a first guiding signal when the acquired respiration signal is stably maintained, determine whether a matching score between the first guiding signal and the acquired respiration signal is greater than or equal to a reference value when the acquired respiration signal is not stably maintained, maintain a first guide respiration pattern of the first guiding signal when a difference indicated by the matching score between the first guiding signal and the acquired respiration signal is within a predetermined reference during a predetermined time, and provide a second guide respiration pattern to the patient when the difference indicated by the matching score between the first guiding signal and the acquired respiration signal is not within the predetermined reference during the predetermined time. an imaging unit configured to capture a respiration image of a patient; a respiration signal conversion unit configured to acquire a respiration signal of the patient by processing, tracking, and analyzing the respiration image of the patient obtained by the imaging unit; a respiration guide unit configured to provide the acquired respiration signal and a guide respiration pattern of a guiding signal together, wherein, while the guide respiration pattern is displayed on an input/output unit, the respiration guide unit displays the acquired respiration signal in real time corresponding to the guiding signal, along with an eye tracking point that moves in real time along the acquired respiration signal; and a respiration determination unit configured to determine whether the acquired respiration signal is suitable for radiation therapy based on information regarding one or more of a respiration period of the acquired respiration signal, a respiration amplitude of the acquired respiration signal, and a respiration pattern of the acquired respiration signal, determine whether the acquired respiration signal is stably maintained, store a first acquired respiration signal related to the acquired respiration signal as a first guiding signal when the acquired respiration signal is stably maintained, determine whether a matching score between the first guiding signal and the acquired respiration signal is greater than or equal to a reference value when the acquired respiration signal is not stably maintained, maintain a first guide respiration pattern of the first guiding signal when a difference indicated by the matching score between the first guiding signal and the acquired respiration signal is within a predetermined reference during a predetermined time, and provide a second guide respiration pattern to the patient when the difference indicated by the matching score between the first guiding signal and the acquired respiration signal is not within the predetermined reference during the predetermined time. determine whether the acquired respiration signal is suitable for radiation therapy based on information regarding one or more of a respiration period of the acquired respiration signal, a respiration amplitude of the acquired respiration signal, and a respiration pattern of the acquired respiration signal, determine whether the acquired respiration signal is stably maintained, store a first acquired respiration signal related to the acquired respiration signal as a first guiding signal when the acquired respiration signal is stably maintained, determine whether a matching score between the first guiding signal and the acquired respiration signal is greater than or equal to a reference value when the acquired respiration signal is not stably maintained, maintain a first guide respiration pattern of the first guiding signal when a difference indicated by the matching score between the first guiding signal and the acquired respiration signal is within a predetermined reference during a predetermined time, and provide a second guide respiration pattern to the patient when the difference indicated by the matching score between the first guiding signal and the acquired respiration signal is not within the predetermined reference during the predetermined time.