An apparatus for inspecting swelling of a battery cell according to an embodiment of the present disclosure includes a first plate configured in a plate shape; a second plate configured in a plate shape and located to face the first plate to be spaced therefrom by a predetermined interval, the second plate being configured so that the battery cell is interposed between the first plate and the second plate; a fixing frame configured so that a portion of the first plate is fixedly coupled thereto; a connection frame having one end fixedly coupled to the second plate and the other end fixedly coupled to the fixing frame; and a pressure measuring element attached to the connection frame and configured to measure a deformation rate of the connection frame.