To provide a bed table which can be installed even when a space under a bed and on both sides is narrow, allows the height of a top plate follow the height of the bed, is movable while an object is placed on the top plate, and is easily attached and detached to/from the bed further.

The bed table includes: a pedestal 13 fixed or detachably supported to the side frame of the bed; first and second pivots provided separately in the longitudinal direction of the bed on the pedestal; first and second arms 14 connected rotatably around a rotary shaft vertical to the longitudinal direction of the side frame with respect to the first and second pivots; and a top plate 11 to which the upper ends of the first and second arms are connected rotatably at separate positions in the longitudinal direction of the side frame. The surface of the top plate 11 is parallel to the longitudinal direction of the side frame, and the top plate 11 holds the state of being parallel to the side frame and moves in the longitudinal direction of the side frame accompanying the swing of the first and second arms 14.