To provide a bed conveying device capable of suppressing an affection due to variations in a positional relation in the vertical direction between a connection part and a connection place of a bed.SOLUTION: When a bed conveying device and a bed pass a road surface with steps, waves and inclination, there are possibly generated variations in the vertical direction between a connection part 50 and a connection place of the bed. On the other hand, the bed conveying device includes a vertical motion-allowing mechanism 52 for allowing vertical motion of the connection part when the connection part 50 is connected to the bed. Therefore, when variations in a positional relation in the vertical direction between the connection part 50 and the connection place of the bed are generated, the connection part 50 performs vertical motion due to being allowed by the vertical motion-allowing mechanism 52. Consequently, it is possible to suppress an affection due to variations in a positional relation in the vertical direction between the connection part 50 and the connection place of the bed.SELECTED DRAWING: Figure 7【課題】連結部とベッドの連結箇所との間の上下方向の位置関係の変動による影響を抑制できるベッド搬送装置を提供する。【解決手段】ベッド搬送装置及びベッドが、段差、うねり、勾配を有する路面を通過する場合、連結部50とベッドの連結箇所との間に上下方向のずれが生じ得る。これに対して、ベッド搬送装置は、連結部50がベッドと連結している時に、連結部の上下動を許容する上下動許容機構52を備える。従って、連結部50とベッドの連結箇所との間の上下方向の位置関係の変動が生じる場合に、上下動許容機構52に許容されることで連結部50が上下動を行う。以上により、連結部50とベッドの連結箇所との間の上下方向の位置関係の変動による影響を抑制できる。【選択図】図7