Pseudomonas aeruginosa can be transmitted through droplet transmission of respiration, sexual contact, direct contact, etc., and there is also a possibility of medical infection. Pseudomonas aeruginosa can be parasitized in the human respiratory tract and intestinal tract, and it is easy to breed in large numbers and induce infection when the resistance is low. Pseudomonas aeruginosa can be transmitted through respiratory droplets. When there is Pseudomonas aeruginosa infection in the lungs, the sputum discharged by the patient may contain Pseudomonas aeruginosa, which can be easily transmitted through the respiratory tract. Pseudomonas aeruginosa infection of the genitourinary system may be spread through close sexual contact. Skin trauma Pseudomonas aeruginosa infection may be contracted by direct contact from touching a skin wound. Pseudomonas aeruginosa is a relatively common nosocomial infection bacterium, so it can also be contracted through medical routes such as unsterilized medical devices.