A baby bed includes a base member arranged on a middle of a bottom of a frame thereof; the frame includes two connecting rods, which will extend along a same diagonal line of the bottom of the frame after the baby bed is expanded; two stopped components are joined on inward ends of the connecting rods respectively, and a stopping bar mechanism is pivoted on a middle of the base member; an elastic element is fitted on the stopping bar mechanism to bias the stopping bar mechanism into a stretched state; the stopped components will come into contact with the stopping bar mechanism to prevent the connecting rods from bouncing when the baby bed is in expanded configuration; the stopping bar mechanism will be apart from the stopped components to allow the baby bed to be folded after the stopping bar mechanism is pivoted with its upper ends moving upwards.