Sputum aspirator capable of being operated by patient

The invention discloses a sputum aspirator capable of being operated by a patient. The sputum aspirator comprises an electronic pressure bin, a suction port and a control device. The electronic pressure bin, the suction port and the control device are connected through universal connecting pipes. The sputum aspirator further comprises a moving trolley body, a first sputum treatment tank, a second sputum treatment tank and a water tank. The electronic pressure bin is connected to the right side of the first sputum treatment tank, an electronic disinfection bin is arranged on the first sputum treatment tank, an elastic connecting opening capable of being connected with the suction port is formed in the right end of the electronic disinfection bin, and the elastic connecting opening is provided with a control switch used for starting the electronic disinfection bin for disinfection when the suction port is connected with the elastic connecting opening. The sputum aspirator enables the patient to suck sputum by himself, disinfection is convenient and thorough, and sputum is convenient and fast to treat.