Seawater sediment pore water sampling device

The invention provides a seawater sediment pore water sampling device. According to the seawater sediment pore water sampling device provided by the invention, sampling of deep-sea sediment pore watercan be effectively realized, a sampling pipe requires not to return an initial position after sampling is completed, sample recycling can be realized by directly lifting up the seawater sediment porewater sampling device, samples are enabled not to be polluted during recycling of the seawater sediment pore water sampling device, and the sampling operation is simplified. The technical scheme is characterized in that the seawater sediment pore water sampling device comprises an outer sleeve, an isolation sleeve and a sampling pipe assembly, wherein two ends of the sampling pipe assembly are sealed; through holes are formed in the side wall of the sampling pipe assembly; first one-way valves are arranged in the through holes; the first one-way valves are capable of enabling a sample outsidethe sampling pipe assembly