Fast ejaculation is related to long foreskin. When the foreskin is too long or circumcised, it wraps around the glans, making it lack normal external stimulation, which can cause the glans to be overly sensitive and induce the patient to ejaculate quickly. In addition, when the foreskin is long, the patient cannot be cleaned easily and it is easy to accumulate foreskin scale, leading to glansitis. Inflammatory stimulation can also aggravate the symptoms of rapid ejaculation and a tendency to premature ejaculation.