Methamphetamine is methamphetamine, also known as methamphetamine, methamphetamine, methamphetamine, pure white crystals, crystal clear, the appearance of ice, commonly known as “meth”, smoking, drug traffickers also called “ice”. The drug has a short-lived euphoric anti-fatigue effect in small doses, so its pills also have the name “Power Pills”. Methamphetamine was first invented by the Japanese. In the 1950s, it was called “anti-fatigue tablets” in China, and in 1957, there was a methamphetamine addiction in Chongqing, and in 1962, there was abuse in Shanxi and Inner Mongolia. Later, the country banned the production, sale and use of methamphetamine, and on November 25, 1996, the United Nations Drug Control Programme (UNDCP) held an international meeting of stimulant experts in Shanghai and agreed that amphetamine-type stimulants would gradually replace opium, heroin, marijuana, cocaine and other common drugs in this century, becoming the most widely abused drugs worldwide in the 21st century. Methamphetamine has a strong euphoric effect on the central nervous system, which can give the user the illusion of boundless energy and less susceptibility to injury, while also reducing their ability to inhibit themselves and leading to a loss of alertness to crisis. Methamphetamine use can lead to a state of intense euphoria, which can be characterized by: not eating or sleeping, excessive activity, emotional impulsiveness, unreasonableness, paranoia, delusions, hallucinations, and violent tendencies. Acute intoxication from amphetamine overdose is usually characterized by restlessness, dizziness, tremors, hyperactive tendon reflexes, talkativeness, irritability, irritability, paranoid hallucinations or panic attacks, and in some cases, suicidal or homicidal tendencies. Cardiovascular symptoms such as headache, chills, pale or red face, palpitations, arrhythmia, angina, elevated blood pressure, lowered blood pressure or circulatory deficiency may occur; gastrointestinal dysfunction such as dry mouth, metallic taste in the mouth, anorexia, nausea, vomiting, diarrhea, abdominal cramps; severe cases may produce convulsions, cerebral hemorrhage, coma leading to death. Chronic intoxication can cause weight loss and psychiatric abnormalities (i.e., amphetamine psychosis, or delusional disorder, with hallucinations and delusional states that resemble paranoid schizophrenia). Other infectious comorbidities of abuse can also occur, including hepatitis, bacterial endocarditis, sepsis, and venereal diseases and AIDS. Methamphetamine use can produce strong dependence, with fast and strong effects in the body, and withdrawal symptoms once the drug is discontinued.