2. suggestion: it may be impotence. Impotence refers to the inability of the penis to erect or the erection is not firm when having sexual desire, or the inability to maintain enough sexual intercourse time, hinder sexual intercourse or fail to complete sexual intercourse despite the erection and a certain degree of hardness. There are many reasons for impotence. First, mental factors, such as apathy between husband and wife, or nervousness for some reason, can lead to impotence. Psychological impotence should be mainly based on psychological counseling and sex education, supplemented by drugs.