The invention relates to a sealed type sampling device which belongs to the technical field of medium sampling facilities. The sealed type sampling device comprises a sampling bottle, wherein one end of the sampling bottle is provided with a first pipeline adapter in a matching way, the other end of the sampling bottle is provided with a second pipeline adapter in a matching way, and the first pipeline adapter and the second pipeline adapter are both communicated with a bottle cavity of the sampling bottle. The sealed type sampling device is characterized in that the side part of the height direction of the sampling bottle is provided with a burst prevention joint in an extension way, the burst prevention joint is communicated with the bottle cavity, and a burst prevention mechanism is connected on the burst prevention joint. According to the technical scheme, the sampling bottle is connected to a pipeline by a first pipeline connection port and a second pipeline connection port quickly for carrying out sampling; after the sampling, when the pressure in the sampling bottle is increased, due to the protection of the burst prevention mechanism arranged on the burst prevention joint and the pressure relief of the burst prevention mechanism, the burst of the sampling bottle can be avoided and the safety influence caused by the diffusion of harmful gas can be eradicated.