As soon as you take off your pants, it is soft to consider erectile dysfunction, which is often categorized as psychological erectile dysfunction and organic erectile dysfunction in clinical practice, and is also related to other factors such as age and sexual function status. 1. Main causes: Psychological erectile dysfunction: usually due to the lack of harmonious relationship between husband and wife, lack of sexual knowledge or asymmetry, work and life pressure, etc., resulting in greater psychological pressure on the patient. Organic erectile dysfunction: patients with atherosclerosis, arterial stenosis, pubic artery shunt and other diseases will lead to abnormal blood flow in the penile cavernous body, which can lead to erectile dysfunction. And Parkinson’s disease, diabetes, hyperlipidemia, hypogonadism and other diseases can also induce erectile dysfunction. Meanwhile, surgery and trauma, long-term use of antidepressants can also lead to erectile dysfunction. 2. Triggering factors: Age: clinical data show that the prevalence of erectile dysfunction increases with age. Sexual function status: if the patient has erectile difficulties,, and reduced sexual fantasies within 6 months, it will also increase the risk of the disease. Others: education level, bad habits, prostate enlargement, etc., can also induce erectile dysfunction. Patients are advised to find out the cause of the disease and follow the doctor’s instructions for systematic treatment when the phenomenon of going soft as soon as they take off their pants occurs.