Mental illness is a category of diseases that seriously endanger the physical and mental health of human beings, which not only seriously affects the work and life of patients and their families, but also brings a heavy social and economic burden. Mental illness has a long course and is prone to relapse, and in the prevention and treatment of mental illness, more than 90% of patients receive home care in their families. Therefore, the quality of home care will be directly related to the recovery of patients. The purpose is to help patients reduce the difficulties after returning from the hospital to the family, consolidate the treatment effect, prevent the relapse of the disease, restore the social adaptability and improve the quality of life. Family members should strengthen the observation from the following aspects: 1, the patient’s self-knowledge wavers or lacks, such as not being able to consciously take medication, stating that they are not sick, etc.; 2, sleep time is reduced or excessive, poor sleep quality; 3, life ability decreases, work efficiency decreases, life becomes passive, lazy, poor personal hygiene, does not comply with work and rest time, alienation from friends and relatives, reduced interest; 4, the emergence of fragmentary mental symptoms, such as a 4, the emergence of fragmentary psychiatric symptoms, such as transient hallucinations, delusions, abnormal speech and behavior, mood swings, etc. If you find any abnormal performance, you should see a doctor in time to prevent the aggravation of the disease.