Runzhijie brain biofeedback therapeutic instrument, brain biofeedback is different from ordinary biofeedback, and the ultimate goal of the latter is not the brain but a specific body organ. The influence of biofeedback has gone through the process of brain → thalamus → autonomic nerve and endocrine. Therefore, measuring autonomic nervous function indexes such as blood pressure and skin temperature has no guiding significance for brain biofeedback. However, it is difficult to further treat physical diseases by using biofeedback to treat the brain.