Signs of the onset of psychosis are mainly the following: 1, personality change: patients are usually more obedient, more understanding, but suddenly become eccentric personality, or was not talkative, and now talkative, especially talkative; 2, emotional instability: particularly easy to provoke, irritable, easy to conflict with family members, classmates, colleagues, leaders, etc.; 3, sensitive, suspicious: is the speech of others, other people’s speech and mannerisms, a little suspicious, feel as if against him; 4, inattentiveness: can not concentrate on work, can not concentrate on learning; 5, poor sleep: sleep disorders, may be difficult to fall asleep, waking up early; 6, behavior contrasts: such as students will suddenly walk out of the classroom, may be the teacher lecture when everyone is listening at ease, he may talk loudly, especially incomprehensible some of the abnormal behavior.