Paranoid-like reactions are a phenomenon that is similar to delusions. Its occurrence is mostly related to the patient’s situation, develops through certain psychological mechanisms, and is not as strongly held as delusions: therefore, it is also called psychogenic delusions. Many of these psychological factors that influence mood often develop first as hypervalent perceptions before further developing a paranoid-like response similar to delusions. The so-called hypervalue is a content of thinking that has strong emotional overtones and becomes a preconception above other concepts, which continues to dominate his mental life for a considerable period of time, causing him to make biased or erroneous judgments about objective situations. The psychological mechanism for the occurrence of paranoia-like reactions may contain the following links: 1. Projection: When a person walks into a room, where several conversational people suddenly stop talking, so the person feels that the conversation is probably about him. This experience is known to all, this is the so-called “shifting role”. 2, self-involvement tendency: anyone has some degree of self-involvement tendency. Because of this characteristic, people can maintain sensitivity to objective things, prompting people to explore the meaning of objective events. Analyze the cause-and-effect relationship between them and decide how to act on their own. Without this characteristic, it would be inconceivable for a person to conduct a normal social life. However, if this self-implicating tendency is overdeveloped, it may also lead to distorted judgments about objective events. For example, the coughing and head scratching of others may be considered relevant to the self, or worse, completely unrelated external scenes may be considered as some kind of signal related to the self. 3.Quality: Paranoid reactions are mostly seen in people with suspicious personalities. Generally speaking, these people are later in age. When they encounter difficulties, they tend to show excessive sensitivity and generate all kinds of suspicion. 4, psychological factors: the psychological factors that cause class paranoia reaction to a certain mental or physical weakness is most common, such as bad habits of masturbation or other sexual inversions: often feel that they have a deficit, and such as illegitimate children or physical disabilities, more sensitive inferiority, these factors often strengthen the role of self-implication and blame, causing a lot of suspicion. Secondly, various setbacks that damage self-esteem, such as failure to promote; frustration in love, love life style, embarrassing criticism and its level of knowledge is not commensurate with the ease of self-pity and sensitivity, and further development can cause class paranoia reaction. 5, chronic deafness: research shows that deafness and paranoia-like reactions have a close relationship, especially in hard of hearing patients, paranoia-like reactions are more common, these patients often have a history of hearing loss for many years, and conductive deafness is more. These patients may have mishearing or hallucinations as a result of sensory deprivation, which can lead to paranoid reactions. However, few studies have been conducted to date and no definitive conclusions have been reached.