A pouch forming device is provided. The pouch forming device comprises a die member including a die on which a pouch film is disposed on a top surface thereof, in which a forming part is formed, and a die holder to which the die is fixed, a stripper member that presses and fixes the pouch film disposed on the die when descending and a first driving piece to move the stripper vertically, a punch member including a punch plate comprising a punch configured to be inserted into the forming part to form an electrode assembly accommodation part in the pouch film and a second driving piece to move the punch plate vertically, and a control member that controls the first driving piece to allow the stripper to ascend when the punch is inserted into the forming part to decrease a pressing force applied to the pouch film.
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