A rotating mechanism , used in a foldable terminal , wherein the foldable terminal comprises a display , the display comprises a neutral layer , the rotating mechanism comprises a limit base , a first swing arm , and a second swing arm , and the limit base is provided with a first arc-shaped groove and a second arc-shaped groove ; the first swing arm comprises a first rotating shaft portion , the first rotating shaft portion is slidably mounted in the first arc-shaped groove and is configured to rotate with respect to the limit base , the second swing arm comprises a second rotating shaft portion , the second rotating shaft portion is slidably mounted in the second arc-shaped groove and is configured to rotate with respect to the limit base , and the first rotating shaft portion and the second rotating shaft portion rotate in opposite directions with respect to the limit base ; and the first rotating shaft portion comprises a first arc-shaped part and a second arc-shaped part that are distributed in a circumferential direction of the first rotating shaft portion , the first arc-shaped part and the second arc-shaped part are fixedly connected, an axle center (C 1 ) of the first arc-shaped part and an axle center (C 2 ) of the second arc-shaped part are both located at the neutral layer , and a radius of the first arc-shaped part is different from a radius of the second arc-shaped part , wherein the second rotating shaft portion comprises a third arc-shaped part and a fourth arc-shaped part that are distributed in a circumferential direction of the second rotating shaft portion , the third arc-shaped part and the fourth arc-shaped part are fixedly connected, an axle center of the third arc-shaped part and an axle center of the fourth arc-shaped part are both located at the neutral layer and coincide with each other, and a radius of the third arc-shaped part is different from a radius of the fourth arc-shaped part. the first swing arm comprises a first rotating shaft portion , the first rotating shaft portion is slidably mounted in the first arc-shaped groove and is configured to rotate with respect to the limit base , the second swing arm comprises a second rotating shaft portion , the second rotating shaft portion is slidably mounted in the second arc-shaped groove and is configured to rotate with respect to the limit base , and the first rotating shaft portion and the second rotating shaft portion rotate in opposite directions with respect to the limit base ; and the first rotating shaft portion comprises a first arc-shaped part and a second arc-shaped part that are distributed in a circumferential direction of the first rotating shaft portion , the first arc-shaped part and the second arc-shaped part are fixedly connected, an axle center (C 1 ) of the first arc-shaped part and an axle center (C 2 ) of the second arc-shaped part are both located at the neutral layer , and a radius of the first arc-shaped part is different from a radius of the second arc-shaped part , wherein the second rotating shaft portion comprises a third arc-shaped part and a fourth arc-shaped part that are distributed in a circumferential direction of the second rotating shaft portion , the third arc-shaped part and the fourth arc-shaped part are fixedly connected, an axle center of the third arc-shaped part and an axle center of the fourth arc-shaped part are both located at the neutral layer and coincide with each other, and a radius of the third arc-shaped part is different from a radius of the fourth arc-shaped part. <EOS>