The first may be psychological factors, the need for psychological treatment, followed by chronic prostatitis, hyperthyroidism and other diseases caused by the need to take medication, surgical treatment. 1. psychological factors: the patient before not premature ejaculation now appear premature ejaculation symptoms may be the mood of the same time tension and anxiety caused by the patient need to find a doctor for psychological treatment, and sexual partners in the patient need to encourage, which can prolong the patient’s ejaculation time and enhance the self-confidence. 2. Chronic prostatitis: patients with chronic prostatitis will show symptoms of premature ejaculation before not now suddenly premature ejaculation, patients can follow the doctor’s instructions with levofloxacin, doxycycline and other antibiotics, as well as alpha-blockers, such as doxazosin, terazosin, and so on. For patients with benign prostatic hyperplasia, prostatectomy can be performed. 3. Hyperthyroidism: If hyperthyroidism leads to sudden premature ejaculation before not premature ejaculation, it is recommended that the patient can follow the doctor’s instructions to use methylthiouracil, propylthiouracil and other inhibitors of thyroid hormone drugs. For patients with moderate to severe hyperthyroidism, surgical removal of the thyroid gland can be taken. It is recommended that patients who previously did not premature ejaculation suddenly premature ejaculation need to consult a doctor in time, the doctor will choose the appropriate measures for the cause of treatment.