A pouch type battery comprising a component for measuring pressure change of the pouch type battery, the component comprising: a connecting pipe having a tubular shape, the connecting pipe being located on an exterior layer of the pouch type battery and the connecting pipe defining a passage through which the pouch type battery and a pressure gauge are directly or indirectly connected; a first fixing unit having a tubular shape, the first fixing unit being connected to a lower end facing the pouch type battery of the both ends of the connecting pipe and located on the exterior layer of the pouch type battery, wherein an upper end of the first fixing unit is closed but a part connected to the connecting pipe is open and a lower end of the first fixing unit is open; a second fixing unit having a tubular shape, the second fixing unit being connected to the first fixing unit and located inside the pouch type battery under the exterior layer of the pouch type battery, wherein an upper end of the second fixing unit is closed but a part connected to the first fixing unit is open, and a lower end of the second fixing unit is open; and a third fixing unit surrounding the upper end and the side of the first fixing unit, wherein an upper side of the third fixing unit include an opening through which the connecting pipe passes, wherein the side of the inner surface of the third fixing unit is fixedly combined to the side of the outer surface of the first fixing unit, and a lower end of the third fixing unit confronts the second fixing unit through the exterior layer of the pouch type battery, the pouch type battery has an opening formed in the exterior layer of the pouch type battery and the first fixing unit extends through the opening. a connecting pipe having a tubular shape, the connecting pipe being located on an exterior layer of the pouch type battery and the connecting pipe defining a passage through which the pouch type battery and a pressure gauge are directly or indirectly connected; a first fixing unit having a tubular shape, the first fixing unit being connected to a lower end facing the pouch type battery of the both ends of the connecting pipe and located on the exterior layer of the pouch type battery, wherein an upper end of the first fixing unit is closed but a part connected to the connecting pipe is open and a lower end of the first fixing unit is open; a second fixing unit having a tubular shape, the second fixing unit being connected to the first fixing unit and located inside the pouch type battery under the exterior layer of the pouch type battery, wherein an upper end of the second fixing unit is closed but a part connected to the first fixing unit is open, and a lower end of the second fixing unit is open; and a third fixing unit surrounding the upper end and the side of the first fixing unit, wherein an upper side of the third fixing unit include an opening through which the connecting pipe passes, wherein the side of the inner surface of the third fixing unit is fixedly combined to the side of the outer surface of the first fixing unit, and a lower end of the third fixing unit confronts the second fixing unit through the exterior layer of the pouch type battery, the pouch type battery has an opening formed in the exterior layer of the pouch type battery and the first fixing unit extends through the opening.