As a patient, before surgery, you often feel torn about which type of anesthesia to choose, whether general anesthesia or “semi-anesthesia” is better? Here are three aspects to analyze this issue: First, the effectiveness of anesthesia. In other words, the anesthesia chosen should be sufficient to meet the requirements of the surgery, that is, the patient does not have any pain during the entire operation; in addition, it should be conducive to the surgeon’s surgical operation, for example, patients undergoing spinal surgery usually need general anesthesia, because the operation requires the patient’s muscles to be completely relaxed. So is general anesthesia preferred for all patients? No! This brings us to the second issue: the impact of anesthesia on patient safety. This is not to say that general anesthesia is not safe, but rather that the patient’s general condition should be taken into account in addition to the surgery itself. For example, an elderly patient with a lower extremity fracture who needs orthopedic surgery, combined with chronic bronchitis and emphysema. If general anesthesia is chosen, the operation may go well, but the patient may need to breathe with the help of a ventilator for a long time after the operation because of breathing difficulties. In contrast, choosing hemi-anesthesia will not affect the patient’s respiratory function. The third issue to consider is the pain control after surgery. The effect of anesthesia usually disappears quickly after waking up from general anesthesia, so the pain sensation at the surgical site will be restored quickly, while semi-anesthesia has little effect on the whole body, and the duration of semi-anesthesia can be artificially extended after surgery, and the pain sensation at the surgical site can be partially blocked, thus facilitating postoperative analgesia. For example, when we perform knee replacement surgery on a patient, we choose hemi-anesthesia, or even partial anesthesia, whenever possible. This allows us to maintain “no pain” at the surgical site for a longer period of time after surgery and facilitates the patient’s functional exercise and recovery of the knee joint. In conclusion, the choice of anesthesia should be individualized according to the specific situation of each patient, taking into account the effectiveness, safety and postoperative analgesia.