Pipeline for negative pressure aspirator

The invention discloses a pipeline for a negative pressure aspirator, relates to the technical field of negative pressure aspirators, and solves the problems that a negative pressure aspiration tube is not resistant to high temperature, is easy to structurally damage during heating and disinfection, and is easy to break due to bending. The pipeline used by the negative pressure aspirator comprises a negative pressure aspiration pipe, the negative pressure aspiration pipe comprises an outer layer pipe and an inner layer pipe, the outer layer pipe and the inner layer pipe are integrally formed through injection molding, a first low-temperature inner pipe and a second low-temperature inner pipe are installed between the outer layer pipe and the inner layer pipe, the first low-temperature inner pipe is attached to the inner wall of the outer layer pipe, and the second low-temperature inner pipe is attached to the inner wall of the inner layer pipe. The second low-temperature inner pipe is attached to the outer su