The utility model relates to a closed hydrogen sulfide-containing sewage sampling device, which belongs to the technical field of detection and evaluation on chemical agents used on oil fields of petroleum engineering. The closed hydrogen sulfide-containing sewage sampling device comprises a sampling bucket, a handle, a piston and an absorption bottle, wherein the sampling bucket is a closed vessel, a piston is installed in the sampling bucket, the top part of the sampling bucket is provided with a central through hole, the handle is connected onto the piston by a thread after passing through the central through hole of the sampling bucket, the top part of the sampling bucket is provided with a gas inlet valve with a quick connector, the sampling bucket is connected with the absorption bottle through a pipeline, the bottom part of the sampling bucket is provided with a central through hole and is connected with a sampling valve by virtue of a thread, and the sampling bucket is provided with metering scales and is connected with a lifting handle. The closed hydrogen sulfide-containing sewage sampling device is reasonable in structure design, simple to operate and capable of rapidly sampling hydrogen sulfide-containing sewage in a closed manner, can be used for measuring the volume and temperature of a water sample in real time, is capable of preventing environmental pollution and the variation of hydrogen sulfide content caused by the volatilization or aeration of hydrogen sulfide in a sewage sample, and can guarantee the representativeness and effectiveness of samples.