The invention discloses an automatic 
bedpan device for a 
nursing bed, which comprises a 
bed board, a replacement mattress rotation rod, a replacement mattress, a linkage adjustment device, a 
bedpan device and an electric push rod; one end of the replacement mattress rotation rod is hinged to the 
bed board  below, and hinged with one end of the electric push rod, the other end of the electric push rod is hinged below the bed board; the other end of the supplementary mattress rotating rod is connected with one end of the linkage adjustment device, and the other end of the linkage adjustment device is connected with the 
bedpan device  Connection; in the 
toilet state, the electric push rod is pushed outward, so that the rotating rod of the supplementary mattress drives the supplementary mattress to rotate downward from the horizontal position away from the mattress, and the linkage adjustment device pulls the bedpan device up to the 
normal position of the mattress gap.  Bottom: After the state of 
toileting is over, the electric push rod is recovered, and the rotating rod of the supplementary mattress is pulled to rotate upwards to the original position, and the bedpan device moves to the lowest point.  The invention has the characteristics of simple structure, convenient operation, safety and reliability, etc., and has the beneficial effect of reducing the difficulty of 
nursing in the process of going to the 
toilet for the bedridden person.