Easy ejaculation during sex is a common manifestation of premature ejaculation in men. Premature ejaculation makes the patient unable to achieve sexual satisfaction during sex due to rapid ejaculation. There are many causes of premature ejaculation, and various psychological and mental factors such as excitement and tension during sex can induce premature ejaculation. Suffering from some diseases of the genitourinary tract, such as prostatitis and epididymitis, can easily cause rapid ejaculation and can produce symptoms such as weakness of ejaculation. The glans is overly sensitive and the penile nerves are easily excited, which is also a very common cause of premature ejaculation in men. Since the glans is overly sensitive, a smaller stimulus will cause sexual excitement and induce the arrival of orgasm, making ejaculation too fast. Premature ejaculation affects the quality of men’s sex life and requires active treatment to improve the symptoms.