The goal of this clinical trial is to compare the effect of three level interventions(universal prevention, selective prevention and targeted prevention) in elderly depression and find out the most efficient intervention path. The main questions it aims to answer are:

• Whether the pre-disease three-level prevention model (universal prevention, selective prevention and targeted prevention) is applicable for elderly depression in urban communities;
• Which level of intervention has the best effect on elderly depression.

Participants will be given the following treatments:

• Level 1 intervention(universal prevention): Health education related to depression to strengthen the participants' self-care skills to reduce sub-health risk factors.
• Level 2 intervention(selective prevention): Psychosocial interventions (including but not limited to cognitive behavioral therapy, acceptance commitment therapy, mindfulness training) aimed at risk factors to prevent more severe depressive symptoms.
• Level 3 intervention(targeted prevention): Therapeutic psychosocial interventions (including but not limited to cognitive behavioral therapy, acceptance commitment therapy, mindfulness training) to reduce patients' depressive symptoms.

Researchers will compare control group to see if the three levels of intervention have a significant effect.

Inclusion Criteria:

1. Aged 60 and above;
2. Permanent residents of urban communities in China;
3. Geriatric Depression Scale (GDS-15) < 9 points;
4. There are susceptibility factors such as living alone, poverty, and suffering from serious diseases.

Exclusion Criteria:

1. There is suicidal behavior or risk;
2. A history of any other mental illness, including drug or alcohol dependence;
3. Those who have speech and hearing disorder and cannot communicate normally;
4. Geriatric Depression Scale (GDS-15) ≥10 points;
5. Do not agree to participate in the research.