A loop-type exhalation sampling device comprising: a body formed in a loop shape forming a central opening configured so that a gas can pass through, the body having an entrance configured so that a part of the gas that passes through the central opening is introduced into the entrance, and the body having an inner passage which is formed in a loop shape and is configured so that a sample gas that is the gas passing through the entrance flows into the inner passage; and a sample gas inlet tube having a first end that is in communication with the inner passage, the sample gas inlet tube having a second end connected to a sample gas analysis device that is provided with a negative pressure providing means capable of suctioning the sample gas that flows into the inner passage, whereinthe body comprises: a first body having a guide surface which is formed on the central opening and which has at least of a portion inclined so as to guide the gas to the entrance, the first body having a first coupling surface formed on an opposite side of the guide surface, and the first body having a protrusion surface which extends from the first coupling surface and which forms a protrusion portion together with the guide surface; and a second body having a second coupling surface coupled to the first coupling surface of the first body, the second body having a curved surface which extends from the second coupling surface and which surrounds the protrusion portion of the first body, and the entrance is formed between an end of the guide surface and an end of the curved surface, and the inner passage is formed between the protrusion surface and the curved surface. a body formed in a loop shape forming a central opening configured so that a gas can pass through, the body having an entrance configured so that a part of the gas that passes through the central opening is introduced into the entrance, and the body having an inner passage which is formed in a loop shape and is configured so that a sample gas that is the gas passing through the entrance flows into the inner passage; and a sample gas inlet tube having a first end that is in communication with the inner passage, the sample gas inlet tube having a second end connected to a sample gas analysis device that is provided with a negative pressure providing means capable of suctioning the sample gas that flows into the inner passage, whereinthe body comprises: a first body having a guide surface which is formed on the central opening and which has at least of a portion inclined so as to guide the gas to the entrance, the first body having a first coupling surface formed on an opposite side of the guide surface, and the first body having a protrusion surface which extends from the first coupling surface and which forms a protrusion portion together with the guide surface; and a second body having a second coupling surface coupled to the first coupling surface of the first body, the second body having a curved surface which extends from the second coupling surface and which surrounds the protrusion portion of the first body, and the entrance is formed between an end of the guide surface and an end of the curved surface, and the inner passage is formed between the protrusion surface and the curved surface. a first body having a guide surface which is formed on the central opening and which has at least of a portion inclined so as to guide the gas to the entrance, the first body having a first coupling surface formed on an opposite side of the guide surface, and the first body having a protrusion surface which extends from the first coupling surface and which forms a protrusion portion together with the guide surface; and a second body having a second coupling surface coupled to the first coupling surface of the first body, the second body having a curved surface which extends from the second coupling surface and which surrounds the protrusion portion of the first body, and the entrance is formed between an end of the guide surface and an end of the curved surface, and the inner passage is formed between the protrusion surface and the curved surface.