"Simulation Sex Toy" to various "God oil" as the representative, and its principle is applied to the glans-coming local mucosal anesthesia role in reducing the sensitivity of the external genitalia, thereby increasing stimulus intensity to stimulate ejaculation (threshold), prolong sexual intercourse time. For patients with premature ejaculation "Simulation Sex Toy" penis skin is too sensitive glans mucosa caused it. But if premature ejaculation is due to central nervous system disorders, brain tolerance threshold is too low to stimulate sexual excitement caused by such adult products (supplies) and no drug effect. In addition, "Simulation Sex Toy" Long-term use of such products will reduce the sensitivity of the glans, will seriously affect the sexual experience.