Patients with various chronic diseases that cause difficulties in self-care need the care of others. For patients with dementia there is currently no specific treatment, and survival with the disease is very long, requiring long-term or even difficult care. The quality of care has a direct impact on the development of the patient’s condition and quality of life. Because the elderly with dementia are not only living with increasingly degenerative abilities, but also often with unmanageable mental behavior problems, it is more challenging than caring for the average chronic basic patient. The basic requirement for caring for a patient with dementia is that the caregiver needs to have sufficient physical strength, energy, love and patience. The first step is to ensure the safety of patients with dementia by removing obstacles and dangerous objects from the living environment to avoid falls and injuries; the second step is to ensure the nutritional intake of patients and improve personal hygiene, as many patients are unaware of hunger and satiety, refuse to eat or crave food, resist changing clothes and bathing; to strengthen functional training so that patients can maintain their residual functions to the maximum extent; to learn communication skills with patients with dementia, to supervise and help patients take medication, and to take care of patients with dementia. Learn to communicate with the patient, monitor the patient’s medication, monitor the patient’s regular visits, learn to regulate their own mindset and relax, etc. Dementia care can be considered a discipline, and there are special training courses for dementia caregivers abroad, as well as certification of professional caregivers.