Provided are a pressure vessel and a vehicle. The pressure vessel includes a casing, a cylinder valve, a valve seat and an inner liner, the casing has a storage space, the casing has a communication channel communicating the storage space with an outside, the cylinder valve is disposed at the communication channel and configured to adjust an opening degree of the communication channel, the valve seat is at least partially supported between the cylinder valve, the inner liner is disposed on an inner wall surface of the casing, the cylinder valve extends out of the inner liner, the inner liner includes a fitting portion adapted to surround and be attached on an outer peripheral surface of the cylinder valve, and a limiting portion is provided on an inner wall surface of the valve seat and adapted to be attached on and stop the outer peripheral surface of the cylinder valve.