A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein said main assembly of the apparatus includes a main assembly side positioning portion, an urging member rotatable about a rotation axis to take an urging position for urging said process cartridge to the main assembly side positioning portion, a retracted position retracted from the urging position and a stand-by position which is in a movement path of said process cartridge, and wherein said rotation axis, an urging portion of the urging member and a portion-to-be-displaced located at an end of the urging member further away from the rotation axis than the urging portion, are arranged in the order named, said process cartridge comprising: an electrophotographic photosensitive drum; process means (2,4,6) configured to be actable on said electrophotographic photosensitive drum; a portion-to-be-positioned; a displacing portion configured to move the urging member from the stand-by position to the retracted position by contacting the portion-to-be-displaced disposed at a position remoter from the rotation axis than the urging portion when said process cartridge advances along an axial direction of said electrophotographic photosensitive drum in the main assembly, said displacing portion configured to move the urging member to the retracted position by contacting the urging member when said process cartridge advances in the main assembly; a portion-to-be-urged configured to be urged by the urging portion in a state in which the process cartridge is set in the main assembly, wherein, when said process cartridge advances in the main assembly, said portion-to-be-urged is urged toward the main assembly side positioning portion so that the portion-to-be-positioned is abutted to the main assembly side positioning portion by the urging member moving to the urging position after being retracted to the retracted position by said displacing portion, wherein said portion-to-be-positioned is positioned to the main assembly side positioning portion by said portion-to-be-urged being urged by the urging portion in a state in which the process cartridge is set in the main assembly. an electrophotographic photosensitive drum; process means (2,4,6) configured to be actable on said electrophotographic photosensitive drum; a portion-to-be-positioned; a displacing portion configured to move the urging member from the stand-by position to the retracted position by contacting the portion-to-be-displaced disposed at a position remoter from the rotation axis than the urging portion when said process cartridge advances along an axial direction of said electrophotographic photosensitive drum in the main assembly, said displacing portion configured to move the urging member to the retracted position by contacting the urging member when said process cartridge advances in the main assembly; a portion-to-be-urged configured to be urged by the urging portion in a state in which the process cartridge is set in the main assembly, wherein, when said process cartridge advances in the main assembly, said portion-to-be-urged is urged toward the main assembly side positioning portion so that the portion-to-be-positioned is abutted to the main assembly side positioning portion by the urging member moving to the urging position after being retracted to the retracted position by said displacing portion, wherein said portion-to-be-positioned is positioned to the main assembly side positioning portion by said portion-to-be-urged being urged by the urging portion in a state in which the process cartridge is set in the main assembly.