The dangers of morphine include addiction, nausea, vomiting, respiratory depression, etc.; when the dosage is too high, the patient may fall into a coma or even die. Morphine is a strong analgesic commonly used in clinical practice, mainly used for pain relief treatment of severe trauma and cancer patients. It can effectively improve the quality of life of the above patients. If it is used improperly, it may cause harm to the human body. If morphine is used for a long time, it may become addictive. Once it is no longer used, the patient will instead experience various discomforts. For elderly people with chronic respiratory distress and respiratory failure, the use may lead to respiratory depression, which is life-threatening. If the dosage is too high, the patient may even fall into a coma and die, as evidenced by pinpoint pupils, lowered blood pressure, low urine output, and cold, clammy skin. As soon as these conditions occur, morphine should be stopped and resuscitation given. In addition, morphine may cause adverse reactions such as nausea, vomiting, drowsiness, constipation, and difficulty urinating. Urticaria and skin edema are much less common adverse reactions. Morphine should be used on a doctor’s prescription. Improper use can be more harmful to the patient.