To provide a bed having a lifting mechanism capable of causing the bed to rise and fall steplessly and smoothly and excellent in operability and safety.

A pair of lifting mechanisms 10 are arranged in opposed relation on both sides in a longitudinal direction of a bed base 1, on which a cushioning body is placed. Each of the lifting mechanisms 10 is so constructed that a leg member 11 pivotably joined to the bed base 1 is linked to a gas cylinder 20 so as not to rapidly raise and fold the leg member 11 owing to the action of the gas cylinder 20. A control lever 40 for pressing a valve-opening member of the gas cylinder 20 through a pressing force-transmitting member is provided on a lower surface of the bed base 1.