Sealing sheet and hemostatic valve

The present invention belongs to the technical field of medical devices and particularly relates to a sealing sheet and a hemostatic valve. The sealing sheet is used for matching with a structural component, and a pipeline is formed in the structural component and provided with a pipe mouth positioned on a surface of the structural component. The sealing sheet is made of elastic materials and alsocovers the pipe mouth, the sealing sheet is provided with a first end face deviating from the structural component and a second end face pressing at the pipe mouth, a first cutting slit is formed inthe first end face, depth of any point of the first cutting slit is smaller than thickness of the sealing sheet at the point along the depth direction of the first cutting slit, a second cutting slitis formed in the second end face, depth of any point of the second cutting slit is smaller than thickness of the sealing sheet at the point along the depth direction of the second cutting slit, the first cutting slit and the se