Abstract: Disclosed is an electric bed, which includes: a base bed frame, which is horizontally disposed; at least one adjustable sub-frame, which is rotatably connected to the base bed frame and is rotatable between a horizontal position and a lifting position; a drive device, which is capable of driving the at least one adjustable sub-frame to rotate; and a plurality of bed planks, which are independent from each other and include at least one fixed bed plank and at least one adjustable bed plank. The electric bed further includes a plurality of quick assembly devices disposed on the base bed frame and the adjustable sub-frame for connecting the fixed bed plank to the base bed frame and fixing the adjustable bed plank to the adjustable sub-frame.