With the decline in cognitive ability, loss of ability to live, the demand of care for the Alzheimer's patients gradually increased. Caregivers tended to bear a greater physical and mental burden. In this study, we found that the caregivers of senile dementia were prone to psychological problems such as depression and anxiety, which may be related to the caregiver's age and caregiving time, and the positive intervention can relieve the psychological problems of the caregivers. This article aims to provide a theoretical basis for nursing workers to explore more effective nursing measures, so as to improve the quality of life of dementia patients and caregivers.