To support the head part of a patient or the like high without damaging the comfortableness of the patient or the like.
The bed is provided with a mattress supporting means which supports a mattress, and the mattress supporting means is supported by a bottom part frame through a pivoting means. The pivoting means supports the mattress supporting means centered on a shaft roughly horizontally extended in the width direction of the mattress, and the mattress supporting means is provided with a connection part which is fixed to the shaft or supports the shaft so as to freely smoothly rotate it. An end part frame is provided with a rotation blocking means for blocking the rotation of the mattress supporting means in a horizontal state and an inclined state.