Excessive use of hands in adolescence mainly refers to excessive and frequent masturbation, which may affect fertility in this case. Masturbation is a way to solve sexual needs and vent sexual energy through one’s own ability, and moderate masturbation can release pressure, which is more conducive to physical and mental health. However, excessive masturbation may induce infectious diseases such as prostatitis and seminal vesiculitis, and may even produce psychological depression or guilt, in which case it may affect the quantity and quality of sperm, and thus affect the male reproductive function. For adolescent males, it is important to make them correctly recognize the harm that excessive masturbation may cause to the body by means of psychological guidance, and to quit masturbation and other bad habits as soon as possible. If the patient is not feeling well, he should consult the doctor for examination and early treatment.