The utility model relates to a passive sampler throwing device, specifically, a concealed DGT passive sampler throwing device for carrying a disk DGT and a probe DGT comprises a buoyancy tank, a carrying frame, a flow direction mark, an adjustable rope, an anchor block and a throwing mark rope, wherein one end of the carrying frame is fixedly connected with the buoyancy tank, the other end of the carrying frame is provided with the flow direction mark, and the carrying frame is respectively provided with the disk DGT and the probe DGT; The anchor block is connected to the buoyancy tank through an adjustable rope, and a throwing mark rope is tied on the anchor block. When in use, the DGT passive sampler and the thermometer are fixed on the carrying frame, and the anchor block and the whole device are thrown to a preset water area; After the sampling is finished, the throwing mark rope is pulled to be quickly retracted. The DGT passive sampler is not limited by the environmental water depth, so that the DGT passive sampler continuously and stably suspends at the preset water depth and is always parallel to the water flow direction, and accurate in-situ sampling is realized; High safety factor and less interference to water environment; The concealment of the whole system is strong, and the recovery rate of the passive sampler is greatly improved.
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