We now encounter many patients with neurological damage, such as cerebral hemorrhage, cerebral infarction, encephalitis, hypoxic-ischemic encephalopathy, etc. Despite the different etiologies, the result is damage to the nerves involved, leading to functional impairment. Often, surgery and neurology departments, after the condition is stabilized, let the patient be discharged or go to a rehabilitation hospital, but often the patient still has functional impairment. Why is this? Because his nerves are damaged or dead; regardless of the cause of nerve damage, there are 3 outcomes at the onset of the disease: 1) all nerve cells in the center of the lesion are dead; 2) cells that are not affected and remain intact; 3) nerve cells that are as damaged as possible during the onset of the disease. Among the above 3 types of cells, the dead ones cannot be regenerated, which is an axiom, and whoever says that nerve cells can be regenerated is lying; the cells that are fine are no longer subject to external damage, and there is no problem; the damaged cells are the ones we can operate on. First of all it must be emphasized that the damage that can be operated must be treated surgically first, this is the principle! And how to repair damaged cells after surgery or in patients who do not need surgery is a problem! Because the more damaged cells are repaired in combination with the nerve cells that are fine, the more likely it is that the sequelae will be minimized, which is the material basis for the preparation for recovery. How to repair damaged cells, first of all, there is a period, 3-4 months within the nerve damage has a salvage significance, more than this period of damaged cells will naturally revert (that is, the live live, the dead die), just like a war, do not save the wounded, some may survive because of the failure to save in time “sacrifice”. There is currently no effective cure for damaged nerves worldwide, but the world’s most recognized treatment for nerve damage is hyperbaric oxygen and related drugs. Hyperbaric oxygen can provide oxygen to the damaged nerve, and combined with related drugs to repair the nerve, the treatment effect is widely recognized. Therefore, I suggest that all patients recovering from nerve damage can be treated with hyperbaric oxygen therapy.