Paroxetine is an antidepressant of the 5-hydroxytryptamine reuptake inhibitor class, which has a significant effect on a wide range of depression and anxiety symptoms. After paroxetine takes effect, patients can significantly reduce depression, anxiety and fear symptoms, and feel relaxed, comfortable, calm and positive inside. After the effect is satisfactory, continuing to take paroxetine can prevent the recurrence of depression and anxiety. In patients with premature ejaculation, the ejaculation delay effect will occur after taking paroxetine orally, and the duration of sexual life will be significantly prolonged.