Methamphetamine is the Thai transliteration of methamphetamine, usually a red tablet, which is a processed methamphetamine tablet, an amphetamine-type stimulant with strong addictive properties. The last two years, methamphetamine drug situation in the mainland is developing faster, gradually replacing the trend of ecstasy. After taking marijuana, do not have to shake your head in a heavy music environment to cathartic drugs, just casually find a quiet corner on the line. So smoking marijuana has a strong covert, many bars because of irregularities, was closed by the police or accepted the punishment, ecstasy smokers lost the detoxification site, part of the people turned to the “embrace” of marijuana. In addition, the price of marijuana is cheaper than ecstasy, and smoking tools are easy to find, which has also become one of the reasons for the growing popularity of marijuana. After smoking methamphetamine, you will not eat or sleep, excessive activity, emotional impulsiveness, unreasonable, paranoia, delusions, hallucinations and violent tendencies. Restlessness, dizziness, tremors, hyperactive tendon reflexes, talkativeness, irritability, irritability, paranoid hallucinations, or panic states. Cardiovascular symptoms such as headache, chills, pale or red face, palpitations, arrhythmia, angina pectoris, elevated blood pressure, decreased blood pressure or circulatory deficiency may also 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 poisoning can cause weight loss and mental abnormalities, and other serious symptoms of poisoning. A typical symptom of marijuana use is mental abnormalities, which are called “off-ramp” by drug addiction circles. Patients may experience a lot of hallucinations, especially hallucinations of hearing, nervousness and fear, and talking nonsense to themselves. Patients may be sensitive and suspicious, such as suspecting that their spouse is cheating on them, suspecting that they are being watched and controlled by others, that they are being followed and monitored, that there are cameras everywhere in the house, that their cell phones are being bugged, and other abnormal mental symptoms. Subsequently, the patient will be irritable, and even have impulsive injury behavior, serious patients run around to escape from the chase, or even suicide and self-injury.