Surgical aspirator for otolaryngology department

The invention relates to a surgical aspirator for otolaryngology department. The surgical aspirator for otolaryngology department comprises a negative pressure pump, an aspiration bottle and an aspiration tube, wherein the negative pressure pump communicates with the aspiration bottle through a negative pressure regulating valve; a negative pressure control device is arranged on the aspiration tube communicating with the aspiration bottle; the negative pressure control device comprises an upper cover and a lower cover; the upper cover comprises a base and a lower cover side protection plate; the side surface of the lower cover is provided with an upper cover side plate; a first spring fixing head is arranged at the middle part of the lower cover; a screw hole is formed in the lower cover behind the first spring fixing head; and a rubber protection sleeve covers the outer sides of the upper cover and a shaft rod. The surgical aspirator for otolaryngology department has the advantages that the structure is simp