A care bed, comprising: a bed body, which is provided with a groove, and a back plate; a wheelchair, which is disposed in the groove, the wheelchair comprises: a wheelchair support, sequentially provided with a wheelchair back plate, a seat plate, a leg plate and a foot plate, the seat plate being fixed to the wheelchair support; a double-traction lifting regulator, which is disposed below a connection position between the wheelchair back plate and the seat plate, wherein the double-traction lifting regulator is configured to actuate the wheelchair back plate; a locking member, which is disposed on the double-traction lifting regulator and used for locking the double-traction lifting regulator; a first traction member (24 & 29), which is connected to the locking member and used for controlling the rise and the fall of the wheelchair back plate when the wheelchair is separated from the bed body; characterized in that the care bed further comprises: a second traction member (20 & 27 & 35), which is connected to the locking member, wherein the second traction member is configured to, when the wheelchair is combined with the bed body, control the locking member to be loosened, so that the wheelchair back plate and the back plate of the bed body rise or fall at the same time; and when the wheelchair is separated from the bed body, control the locking member to be locked, so that the rise and the fall of the wheelchair back plate is controlled by the first traction member. a bed body, which is provided with a groove, and a back plate; a wheelchair, which is disposed in the groove, the wheelchair comprises: a wheelchair support, sequentially provided with a wheelchair back plate, a seat plate, a leg plate and a foot plate, the seat plate being fixed to the wheelchair support; a double-traction lifting regulator, which is disposed below a connection position between the wheelchair back plate and the seat plate, wherein the double-traction lifting regulator is configured to actuate the wheelchair back plate; a locking member, which is disposed on the double-traction lifting regulator and used for locking the double-traction lifting regulator; a first traction member (24 & 29), which is connected to the locking member and used for controlling the rise and the fall of the wheelchair back plate when the wheelchair is separated from the bed body; a wheelchair support, sequentially provided with a wheelchair back plate, a seat plate, a leg plate and a foot plate, the seat plate being fixed to the wheelchair support; a double-traction lifting regulator, which is disposed below a connection position between the wheelchair back plate and the seat plate, wherein the double-traction lifting regulator is configured to actuate the wheelchair back plate; a locking member, which is disposed on the double-traction lifting regulator and used for locking the double-traction lifting regulator; a first traction member (24 & 29), which is connected to the locking member and used for controlling the rise and the fall of the wheelchair back plate when the wheelchair is separated from the bed body; a second traction member (20 & 27 & 35), which is connected to the locking member, wherein the second traction member is configured to, when the wheelchair is combined with the bed body, control the locking member to be loosened, so that the wheelchair back plate and the back plate of the bed body rise or fall at the same time; and when the wheelchair is separated from the bed body, control the locking member to be locked, so that the rise and the fall of the wheelchair back plate is controlled by the first traction member.