The invention relates to a sample extraction pool device, in particular to a mild-temperature-resistant and high-pressure-resistant extraction pool used for extracting solvent; a circular groove is arranged on the end surface of the pool body; small steps are arranged at the bottom of the internal side of the groove; small steps are arranged at the root of the internal side of the groove; a sealing cover is arranged on the end surface of the extraction pool body; a protuberant sealing cut is arranged at the internal side of the extraction pool body to which the sealing cover is close; wherein, a protuberant ring-shaped step is arranged in the cut; a guide hole for sealing cover is arranged in the middle of the sealing cover; a ring-shaped sealing gasket is arranged between the sealing cover and the end surface of the extraction pool; a circle of steps are arranged at the internal side above the gasket, just enough for placing a filtering sheet; a sealing cover cap is connected with the extraction pool through in a threaded way. The sample extraction pool device has the advantages that the device ensures that a gasket and a filtering sheet at the upper and lower sides are reduced from the sealing structure so that the arrangement and detachment are very convenient, the requirement for processing precision of mechanical components are lowered; the device not only has low manufacturing cost and long service life but also has low operating cost, and is especially suitable for being used for the extraction pool for device for accelerating solvent.