Withdrawal reactions generally last 10-14 days, and the exact duration is related to the substance to be withdrawn, the individual’s physique, the will to withdraw at the time of withdrawal, and the duration of addiction, and should be analyzed on a problem-specific basis. A withdrawal reaction is a specific psychological or physiological reaction that occurs when quitting tobacco, alcohol or a certain drug. Patients often show that they want to smoke or drink during the withdrawal period, or want to take a certain drug with general discomfort, and may also have headaches, irritability and anxiety, or even self-harm and other adverse reactions. The duration of withdrawal is usually 10-14 days, but some patients may have withdrawal reactions lasting 1-2 months or even longer. In addition, it should be noted that the withdrawal process is very painful and requires strong willpower. If the addiction is heavy and you have difficulty with the withdrawal pain, you should seek help from the relevant hospital department in a timely manner. In short, when a patient has a withdrawal reaction, it is recommended to have a family member or a dedicated person to watch over the patient 24 hours a day to understand the patient’s status and to help the patient increase his or her confidence in quitting.