Sexual addiction can be divided into three tiers: First, sexual behaviors that are generally considered by the public as normal, acceptable and tolerable, such as masturbation. The second is the sexual behavior that is prohibited by law, contrary to social morality and ethics, not accepted by the public, and only for oneself, such as self-mutilation and exhibitionism. Third, the behavior is harmful to personal rights, there is a violation of the object, and is prohibited by law, such as indecent assault, rape, etc. The reason why academics have been debating the definition of sexual addiction is because of the overlapping conflict between the disease and the law. The original purpose of psychopathology research is to provide help, correction, and treatment for individuals with special needs. However, when a definition such as “sexual addiction” is developed, some morally deficient individuals may use it as a protective color from the blame they deserve. This is why academics are cautious about defining it.