The invention relates to a multifunctional all-electric nursing bed. The surface of the buttock of the multifunctional all-electric nursing bed is provided with a defecation door hole, the lower side and the defecation door hole are correspondingly provided with a movable defecation door, a bed pan bracket and a linkage mechanism, the movable defecation door is driven by an electric telescopic rod, when the movable defecation door closes the defecation door hole, the bed pan bracket is located outside the position below the defecation door hole through the linkage mechanism correlated to the electric telescopic rod, and when the movable defecation door is opened, the bed pan bracket is located below the defecation door hole, and a bed pan placed on the bed pan bracket is right located in the defecation door hole and is flush with the surface of the buttock. Multiple functions such as back rising, rightward overturning, leftward overturning and leg bending are achieved through the electric telescopic rod. Moving is achieved by pressing a control switch, stopping is achieved by releasing the control switch, the back rising, the rightward overturning and the leftward overturning can achieved at any angle ranging from 0 degree to 90 degrees, and in other words, a patient can stay at any position. Back rising and defecation door opening can be achieved at the same time, or back rising, leg bending and defecation door opening can be achieved at the same time, and the patient can normally relieve himself under the half-lying and half-leaning state or in the sitting posture.