A baby stroller (1, 1') comprising: a stroller frame (2, 5), the stroller frame (2, 5) comprising a locking component (42, 42', 65) adapted to restrain a folding action of the stroller frame (2, 5); and a child carrier disposed on the stroller frame (2, 5), wherein the child carrier is adapted to be positioned or pivoted relative to the stroller frame (2, 5), and wherein the child carrier is adapted to provide a releasing force to the locking component (42, 42', 65) to allow the folding action of the stroller frame (2, 5) during a pivotal movement of the child carrier relative to the stroller frame (2, 5), wherein the stroller frame (2, 5) further comprises a releasing portion disposed on a surface of the stroller frame (2, 5) and corresponding to the locking component (42, 42', 65), and the releasing portion is adapted to receive the releasing force and to transmit the releasing force to the locking component (42, 42', 65) to drive the locking component (42, 42', 65) to move when the releasing portion receives the releasing force, wherein the releasing portion comprises a driving component (41, 61) disposed on the surface of the stroller frame (2, 5) and corresponding to the locking component (42, 42', 65) for receiving the releasing force and for transmitting the releasing force to the locking component (42, 42', 65) to drive the locking component (42, 42', 65) to move when the releasing portion receives the releasing force, wherein the stroller frame (2, 5) further comprises a child carrier mount for allowing the child carrier to be mounted thereon, and the driving component (41, 61) is movably disposed on the child carrier mount and located beneath the child carrier, and wherein the child carrier mount comprises a hollow guiding portion, the driving component (41, 61) is partially and slidably inserted into the hollow guiding portion, characterized in that an end of the driving component (41, 61) is exposed out of the hollow guiding portion for contacting with the child carrier. a stroller frame (2, 5), the stroller frame (2, 5) comprising a locking component (42, 42', 65) adapted to restrain a folding action of the stroller frame (2, 5); and a child carrier disposed on the stroller frame (2, 5), wherein the child carrier is adapted to be positioned or pivoted relative to the stroller frame (2, 5), and wherein the child carrier is adapted to provide a releasing force to the locking component (42, 42', 65) to allow the folding action of the stroller frame (2, 5) during a pivotal movement of the child carrier relative to the stroller frame (2, 5), wherein the stroller frame (2, 5) further comprises a releasing portion disposed on a surface of the stroller frame (2, 5) and corresponding to the locking component (42, 42', 65), and the releasing portion is adapted to receive the releasing force and to transmit the releasing force to the locking component (42, 42', 65) to drive the locking component (42, 42', 65) to move when the releasing portion receives the releasing force, wherein the releasing portion comprises a driving component (41, 61) disposed on the surface of the stroller frame (2, 5) and corresponding to the locking component (42, 42', 65) for receiving the releasing force and for transmitting the releasing force to the locking component (42, 42', 65) to drive the locking component (42, 42', 65) to move when the releasing portion receives the releasing force, wherein the stroller frame (2, 5) further comprises a child carrier mount for allowing the child carrier to be mounted thereon, and the driving component (41, 61) is movably disposed on the child carrier mount and located beneath the child carrier, and wherein the child carrier mount comprises a hollow guiding portion, the driving component (41, 61) is partially and slidably inserted into the hollow guiding portion, characterized in that an end of the driving component (41, 61) is exposed out of the hollow guiding portion for contacting with the child carrier.