”This is an important principle of treatment. To achieve “early treatment”, we must focus on the changes of the patient’s mental symptoms. The following aspects can be observed from the early symptoms of the “signal”: 1, speech change words reduce, more questions and less answers, more speech, incoherent, ordinary people can not understand what he said, the content of speech is empty, strange and strange, sometimes talking to themselves silent. 2, personality and temperament change, such as the original enthusiasm and cooperation of people, become silent, friends and relatives to visit the cold, do not care about family life and work, casual life, unhygienic, work procrastination, closed doors, the original frugal people become big, like to spend money. 3, the mood of the abnormal changes in some patients all day long, happy, nosy, pretentious, some patients are depressed, sad face, think life is worse than death. Or they may get angry at trivial things and hurt people and destroy things; or they may be anxious and nervous, restless, often look at the mirror and laugh alone. 4.Particularly suspicious become particularly sensitive, think that other people’s words and actions are aimed at him, think that the newspaper, television content is also related to it, often suspect that someone wants to harm them, etc. 5. Abnormal changes in behavior are often manifested as a decrease in behavior, disregard for household chores, disregard for children, wandering around or often collecting many unnecessary items, treating scraps as treasures, or walking with strange postures and repetitive movements. 6. Decrease in work and learning ability, significant decrease in work and learning efficiency, frequent errors in work, significant decrease in academic performance, lack of concentration and memory loss, etc.