Prone position auxiliary sputum excretion bed

The utility model discloses a prone position auxiliary sputum excretion bed which comprises a bed frame, an installation cavity is formed in the bed frame, a first bed body, a second bed body and a third bed body are sequentially hinged in the installation cavity, and a first driving device is arranged at the position, corresponding to the hinged position of the first bed body and the second bed body, of the bed bodies. The first driving device is used for driving the second bed body to rotate relative to the first bed body, a second driving device is arranged at the end, close to the first bed body, of the second bed body and used for driving the third bed body to rotate relative to the first bed body, and the third bed body is provided with a first cavity and a second cavity in the length direction. Movement of the second bed body and the third bed body is achieved through the first driving device and the second driving device, automatic driving is achieved while the prostrating effect is achieved, oppressi