The impotence of a boy’s first coitus is mainly considered to be related to psychological factors such as tension and anxiety. The possibility of mental factors, organic lesions, drug effects and other factors should also be considered. 1. Psychological factors: in the first coitus, boys may have tension, anxiety and other adverse emotions, which in turn triggers impotence. 2. Mental factors: such as depression, schizophrenia and other diseases, can trigger impotence, premature ejaculation and other physical symptoms. 3. Organic lesions: such as prostatitis, pituitary tumors, penile curvature, diabetes, etc., may lead to impotence in the first time a boy has intercourse. 4. drug effects: recent and continuous application of drugs such as finasteride, may also trigger impotence. Boys for the first time in the same room impotence is recommended to go to the hospital in time, and follow the doctor’s instructions for treatment, the drug should be applied under the guidance of the doctor.