Multi-cavity sputum suction tube capable of being placed into electronic bronchoscope

The utility model relates to the technical field of sputum suction tubes, and discloses a multi-cavity sputum suction tube capable of being placed into an electronic bronchoscope, which comprises a tube body, an endoscope channel, a liquid injection channel and a negative pressure suction channel are arranged in the tube body, and the liquid injection channel and the negative pressure suction channel are respectively positioned on two sides of the endoscope channel; when the tube body is inserted into the pharynx to be used, an endoscope in the endoscope channel can observe the insertion condition, the suction condition of sputum in the body of a patient can be observed conveniently, the operation difficulty is reduced, and the operation efficiency is improved. When the anti-fog lens is used, water or medicine can be injected to the suction position through the liquid injection channel, sputum is diluted so that thick sputum can be sucked, liquid in the liquid injection channel is guided into the transition c