Negative Penile Pressure Therapy is commonly used in the treatment of erectile dysfunction in men and refers to the use of a negative pressure suction device to allow the penis to become erect in a vacuum. The principle of the treatment is to use a negative pressure suction device to snap onto the root of the penis, pumping out air from the distal end to create a vacuum environment, stopping the venous return of the penis and thus causing the penis to achieve an erection, after which a rubber ring is attached to the root of the penis, and then the ring is removed after the end of sexual intercourse. It is commonly used in the treatment of male erectile dysfunction and so on. It is not recommended that patients try negative pressure suction treatment on their own, so as not to operate improperly to avoid damage to the reproductive organs, and it is recommended that patients under the guidance of a professional doctor to clarify the cause of the disease and then carry out systematic treatment.