It is very important to recognize the early symptoms of schizophrenia so that they can be detected and treated early. Most patients have a slow onset of the disease with no obvious cause. Common early symptoms are as follows: 1. Sleep changes: gradually or suddenly become difficult to sleep, easy to wake up or sleep not deep, nightmares or too much sleep 2. Tantrums, etc. 3, abnormal behavior: behavior gradually becomes eccentric, secretive or incomprehensible, like to be alone, unashamed, dull, lazy life, wandering out, etc. 4.Sensitive and suspicious: sensitive to everything, associating the normal things around him with himself. 5.Change of personality: the original lively and cheerful person becomes silent and seldom speaks, often sits still. The person who was always clean and neat becomes unkempt and lazy in life, etc. 6. Abnormal language expression: when talking with him, the content lacks the center, or says something irrelevant, making it impossible to understand, feeling that it is hard to talk, etc.