The initial drug addiction attack has the following symptoms: 1, there is a strong sense of craving: a determined, stubborn, difficult to restrain the tendency to seek. It is the heart addiction, easy to restlessness, anxiety, etc.; 2, general weakness and weakness: the first manifestation of loss of vitality at the onset of addiction, like a very serious disease; 3, more impulsive behavior: extreme emotional instability, self-injury, self-harm behavior, accompanied by increasingly strong addiction, drug addicts will produce pain by self-injury, distraction, is a common phenomenon; 4, in Strong delusions and hallucinations lead many drug addicts to harm others when their addiction occurs. Clinically, there was once a drug addicted patient, who suddenly did not take drugs, would become addicted, become more emotional, behave very impulsively, have threatening words to family members, have a very bad attitude toward medical staff, and try every possible way to get out of the hospital. In fact, he wanted to go out to look for drugs, but his behavior was impulsive and he was about to self-harm. He was immediately restrained for protection and treated with appropriate sedative medication.