With the gradual development of dementia, the degree of dementia is also gradually aggravated, and the memory impairment becomes more and more obvious, which then enters the second stage, the stage of insanity, which is also the stage of moderate dementia. In the moderate dementia stage, the patient’s condition and symptoms continue to worsen, and the decline is more obvious, cognitive function is further reduced, just used things turn around and forget, some commonly used supplies are also lost, can’t remember their own work experience, forget their own birthdays, some will forget their way home, don’t remember the names of their loved ones, can’t find their own room. The patient’s speech function is also impaired, speaking in a preverbal manner with vague content, sometimes unable to name common items. In addition to memory impairment, patients are also accompanied by symptoms such as loss of recognition and loss of use, more pronounced thinking, emotional disorders and changes in personality and character, and behavioral manifestations of obvious abnormalities, and some patients may have hypomobility, masked face and increased muscle tone, which can also be seen in hemiplegic epileptic seizures. Patients can no longer participate in work, it is more difficult to complete household chores, their daily life has been difficult to take care of themselves, and they need others to help and take care of them.