The invention relates to a headspace bottle for removing water in a sample. The headspace bottle comprises a water removing inner bottle (3), a headspace outer bottle (1) and a headspace bottle cover, wherein the headspace outer bottle (1) is used for placing a to-be-analyzed sample (8); the headspace bottle cover can cover a headspace outer bottle opening (6); a water removing inner bottle outer edge (2) which is positioned at the uppermost position of the water removing inner bottle (3) can be clamped on the headspace outer bottle opening (6) of the headspace outer bottle (1); a screen which is used for placing an adsorption material layer (4) is arranged at the bottom part of the water removing inner bottle (3); a sample balance space (7) is formed above the adsorption material layer (4). The headspace bottle disclosed by the invention has the advantages that the structure is simple, the operation is convenient, a sample can be processed through the headspace bottle, and the sample containing water can be quickly analyzed and tested.