A door opening and closing device (1, 101) comprising: a body case (2, 102) elongated in one direction; a retractable arm (4, 104) which is provided rotatable in the body case (2, 102) and rotates from an open state to a closed state; a first slider (34, 134) which is provided at one side of the body case (2, 102) and moves linearly in the one direction in conjunction with rotation of the retractable arm (4, 104); a second slider (31, 131) which is provided at an opposite side of the body case (2, 102) in such a way that an arm axis (5, 105) as a rotational center of the retractable arm (4, 104) is sandwiched between the first slider (34, 134) and the second slider (31, 131) and which moves linearly in the one direction in conjunction with rotation of the retractable arm (4, 104); a biasing member (28, 128) which is provided at the one side of the body case (2, 102) and biases the first slider (34, 134) in the one direction toward the arm axis (5, 105); and a damper (32, 132) which is provided at the opposite side of the body case (2, 102) and resists linear movement of the second slider (31, 131), wherein the biasing member (28, 128) gives the retractable arm (4, 104) in the open state a biasing force in an opening direction, and when the retractable arm (4, 104) in the open state is rotated in a closing direction by a predetermined angle or more, the biasing member (28, 128) gives the retractable arm (4, 104) a biasing force in the closing direction, and when the retractable arm (4, 104) is rotated in the closing direction, the damper (32, 132) damps rotation of the retractable arm (4, 104), characterised in that the door opening and closing device (1, 101) further comprises a first link (33, 133) which is connected rotatable to the retractable arm (4, 104) at an off-center position from the arm axis (5, 105) and is connected rotatable to the first slider (34, 134). a body case (2, 102) elongated in one direction; a retractable arm (4, 104) which is provided rotatable in the body case (2, 102) and rotates from an open state to a closed state; a first slider (34, 134) which is provided at one side of the body case (2, 102) and moves linearly in the one direction in conjunction with rotation of the retractable arm (4, 104); a second slider (31, 131) which is provided at an opposite side of the body case (2, 102) in such a way that an arm axis (5, 105) as a rotational center of the retractable arm (4, 104) is sandwiched between the first slider (34, 134) and the second slider (31, 131) and which moves linearly in the one direction in conjunction with rotation of the retractable arm (4, 104); a biasing member (28, 128) which is provided at the one side of the body case (2, 102) and biases the first slider (34, 134) in the one direction toward the arm axis (5, 105); and a damper (32, 132) which is provided at the opposite side of the body case (2, 102) and resists linear movement of the second slider (31, 131), wherein the biasing member (28, 128) gives the retractable arm (4, 104) in the open state a biasing force in an opening direction, and when the retractable arm (4, 104) in the open state is rotated in a closing direction by a predetermined angle or more, the biasing member (28, 128) gives the retractable arm (4, 104) a biasing force in the closing direction, and when the retractable arm (4, 104) is rotated in the closing direction, the damper (32, 132) damps rotation of the retractable arm (4, 104), characterised in that the door opening and closing device (1, 101) further comprises a first link (33, 133) which is connected rotatable to the retractable arm (4, 104) at an off-center position from the arm axis (5, 105) and is connected rotatable to the first slider (34, 134).