Abstract: The pressure sores prevention bed according to this invention consists of two parts arranged in an alternated fashion. Parts A (1) and Parts B (2) are moved upward and downward by the lifting sets C (3), M (10), and F (6), N (11). While Parts A (1) are at the lowered position, Parts B (2) support the patient's entire weight, and the patient's skin does not touch Parts A (1). While Parts B (2) are at the lowered position, Parts A (1) support the patient's entire weight, and the patient's skin does not touch Parts B (2). The lifting sets C (3) and F (6) are controlled by the control set D (4) which has a timing switch which can be set for a period of 1-30 minutes, with a circuit breaking system provided. The pressure sores prevention bed according to this invention also includes the system for inclining the head end of the bed and the system for tilting the head rest at the angle of 10-15°.