Sickbed convenient for assisting critical patient to adjust sleeping posture

The invention relates to a sickbed convenient for assisting critical patients to adjust the sleeping posture, the sickbed comprises a moving bed and a turnover mechanism, the turnover mechanism comprises a bed body, supporting legs and a carriage, the bed body is rotatably mounted between the two supporting legs, sliding seats are slidably mounted on opposite sides of two sides of the bed body, the sliding seats at the same ends are rotatably mounted with two ends of a first U-shaped arm. A second U-shaped arm is installed on the first U-shaped arm in a sliding mode, air bags are installed on the inner wall of the first U-shaped arm and the inner wall of the second U-shaped arm, and inserting holes are formed in the two opposite sides of the supporting legs; a first motor works, a speed reduction box adjusts the speed to drive the bed body to rotate by 180 degrees between the supporting legs, then the moving bed is placed on the bed body, the first U-shaped arm and the second U-shaped arm are moved to be in t