A battery cell pressure measuring apparatus according to an embodiment of the present invention comprises a pressure sensor for measuring the pressure of battery cells stacked inside a battery module, wherein the pressure sensor comprises: a plurality of pressure measuring units; a connection unit connecting the plurality of pressure measuring units to each other; and an output unit which is connected to the connection unit and outputs a pressure value measured through the pressure measuring units, and the plurality of pressure measuring units are arranged on the surfaces of the battery cells to measure the pressure of the battery cells.