An apparatus for manufacturing an electrode assembly, which is configured to laminate a stack of an electrode and a separator to manufacture an electrode assembly, the apparatus comprises: an upper roll and a lower roll , which are configured to press upper and lower portions of the stack , respectively; an upper support part configured to support the upper roll ; a moving part configured to allow the upper support part to move; a lower support part configured to support both sides of the lower roll ; a pressure detection part provided on the lower support part to measure a pressure applied to the lower roll , thereby detecting a pressure applied to the stack; and a control part configured to adjust the pressure applied to the stack by reflecting a pressure detection value detected in the pressure detection part , wherein the pressure detection part comprises a first pressure detection part configured to detect a pressure applied to one side of the lower roll ; and a second pressure detection part configured to detect a pressure applied to the other side of the lower roll ; wherein the lower support part comprises a first support part configured to support the one side of the lower roll and a second support part configured to support the other side of the lower roll , and the first pressure detection part detects a pressure applied to the first support part , and the second pressure detection part detects a pressure applied to the second support part ; and wherein the lower support part further comprises a third support part configured to support lower portions of the first support part and the second support part , and the pressure detection part further comprises a third pressure detection part configured to extract the total pressure applied to the stack by detecting a pressure applied to the third support part . an upper roll and a lower roll , which are configured to press upper and lower portions of the stack , respectively; an upper support part configured to support the upper roll ; a moving part configured to allow the upper support part to move; a lower support part configured to support both sides of the lower roll ; a pressure detection part provided on the lower support part to measure a pressure applied to the lower roll , thereby detecting a pressure applied to the stack; and a control part configured to adjust the pressure applied to the stack by reflecting a pressure detection value detected in the pressure detection part , wherein the pressure detection part comprises a first pressure detection part configured to detect a pressure applied to one side of the lower roll ; and a second pressure detection part configured to detect a pressure applied to the other side of the lower roll ; wherein the lower support part comprises a first support part configured to support the one side of the lower roll and a second support part configured to support the other side of the lower roll , and the first pressure detection part detects a pressure applied to the first support part , and the second pressure detection part detects a pressure applied to the second support part ; and wherein the lower support part further comprises a third support part configured to support lower portions of the first support part and the second support part , and the pressure detection part further comprises a third pressure detection part configured to extract the total pressure applied to the stack by detecting a pressure applied to the third support part . <EOS>