Problem to be solved: to provide a bed structure capable of accurately judging the operation state of the human body on the bed, even if it is very simple, and can be easily cleaned even when it is dirty.Solution 10 the cloth 10 covering at least the upper surface of the elastically deformable mattress 4 provided in bed 1 is bonded to the cloth main body 11 having elasticity and the woven fabric body 11 to the woven fabric or the fabric main body 11 integrally with the fabric body 11 to change the change in the stretched state of the fabric main body The state detecting member 20 is composed of a band like member and has a long axis of the body along the long side of the mattress 4, and the waist of the person to be protected in the lying position of the mattressIn the region R1 positioned in the long side or short side direction of the bed body 11, a plurality of parallel ones are arranged in series, and are electrically connected in series.Diagram【課題】非常にシンプルな構成でありながらも、ベッド上の人体の動作状態を精度良く判定でき、また汚れた場合でも容易にクリーニングできる敷布を提供する。【解決手段】ベッド1に備えた弾性変形可能なマットレス4の少なくとも上面を覆う敷布10であって、伸縮性を備えた敷布本体11と、前記敷布本体11と一体に編織または前記敷布本体11に接合され、前記敷布本体11の伸縮状態の変化を電気特性の変化に変換する状態検出部材20と、を備えて構成され、前記状態検出部材20は、帯状部材で構成されるとともに、身体の長軸を前記マットレス4の長辺に沿わせた臥位で被保護者の腰部に位置する領域R1に、前記敷布本体11の長辺方向または短辺方向に複数本並列配置され、それぞれが電気的に直列に接続されている。【選択図】図1