Hard soon considered erectile dysfunction, the causes are psychogenic such as depression, etc., organic such as too much cortisol, etc. and mixed, it is recommended to consult a specialist, the use of medication to follow the doctor’s instructions. 1. Psychological: usually associated with depression, stress and emotional problems, sudden onset of erectile dysfunction is usually caused by anxiety. In addition, problems between sexual partners or other emotional problems may cause erectile dysfunction. 2. Organic: Including vascular origin such as cardiovascular disease, diabetes mellitus, etc.; neurological origin such as spinal cord and brain injury, Alzheimer’s disease, etc.; hormonal abnormality such as hypogonadism, hyper or hypothyroidism, etc.; medication such as antidepressant, anti-androgenic medication, etc., which may cause erectile dysfunction. 3. Mixed: refers to the development of psychological and organic together, such as hyperlipidemia combined with anxiety. When hardness does not last long, erectile dysfunction is suspected and timely diagnosis and treatment is recommended.