Rotatable sputum suction tube

The utility model relates to a rotatable sputum suction tube which comprises a negative pressure connecting body, a suction tube connecting port, a negative pressure adjusting port and a plug are arranged on the negative pressure connecting body, one end of the negative pressure connecting body is further fixedly provided with a connecting head in a penetrating mode, the periphery of the connecting head is rotatably sleeved with a rotary connecting piece, and a rubber ring is sleeved on the connecting head. The rubber ring is arranged in the rotary connecting piece, a sputum suction pipe is inserted into the rotary connecting piece, two side sputum suction openings are formed in the end, away from the rotary connecting piece, of the sputum suction pipe, and the end, inserted into the rotary connecting piece, of the sputum suction pipe extends into the connector; according to the scheme, the first rotating block and the second rotating block are clamped through the clamping block and the clamping groove, insta