For sexually mature adolescents, frequent erections are normal if they occur under normal psychosexual stimulation. If frequent erections occur, it is mainly due to the teenager’s sensitivity to psychosexual stimulation or exposure to sensual sexual stimulation in daily life, which leads to a psychosexual fantasy. The frequent erection is caused by the sensitivity of psychological factors to sexual things. If there is no abnormal discomfort after the erection, there is no need to worry. It is recommended that adolescents divert their attention and focus on their studies and life. There are also cases of abnormal penile erection, which is a pathological disease of the penis, some of which have unknown causes, and some of which are caused by the use of drugs. But abnormal penile erection is mainly under the influence of non-sexual psychological stimulation, not the erection of sexual fantasy or sensual stimulation, if a long time erection without weakness, it is recommended to go to the hospital in time to prevent excessive erection for a long time to cause internal thrombosis and more serious complications.