A cradle type negative pressure treatment bed, which includes: a desk (1), a handrails (8), a sway bed (39), a mattress (32), a bed body divided into upper bed (17) and lower bed (27). The sway bed is placed in the grooves formed by the bottom of the desk and the handrail. An excretion exit (12) is provided at the bottom of the sway bed and in the mattress. A toilet (11) on an excretion trousers (10) is fixed on the excretion exit. The top end of the toilet is provided with a valve (40) for regulating negative pressure, and the bottom exit is connected to an inlet of a sealed sanitary container (23). The inlet of sealed sanitary container connects with a carbon fiber filter (22), with a separator (21) for separating stream and water in turns, and with an inlet of a vacuum pump I (34) in a muffle (20) at last. The treatment bed also provided with a flusher and a negative pressure intake equipment.
