Baby carriage and combined body of baby carriage and children automobile seat

The utility model discloses a baby carriage and a combined body of the baby carriage and a children automobile seat. The baby carriage comprises a frame with a bracket and a locking mechanism, wherein the locking mechanism comprises a slot, a locking piece with a lock hook and an unlocking button; the unlocking button is linked with the locking piece; a dwell mechanism is arranged between the unlocking button and the bracket and comprises a dwell piece arranged on the bracket, a dwell pin arranged on the unlocking button, a third elastic piece arranged between the dwell pin and the unlocking button and a second elastic piece arranged between the dwell piece and the bracket; the dwell piece is provided with a positioning groove and a first guide surface which is convenient for the dwell pin to be inserted into the positioning groove; and the upper end part of the dwell piece is opposite to the lower part of the slot. The locking mechanism and the dwell mechanism are simultaneously controlled by pressing the un