To observe the clinical efficacy of TCM acupuncture combined with western medicine nimodipine for prevention of post-stroke dementia by comparing with clinical conventional treatment methods.

Inclusion Criteria:

1. Definite ischemic stroke or hemorrhagic stroke confirmed by head CT / MRI examination
2. Memory or cognitive and executive dysfunction. Cognitive dysfunction will be determined after the mini mental state evaluation (MMSE) score
3. Age limited to 40-85 years, irrespective of gender
4. Stable condition, clear consciousness, no aphasia, oral medication available
5. No major comorbidity, no major depression
6. Consent and signed patient informed consent

Exclusion Criteria:

1. Had serious medical conditions, such as heart, liver, kidney, or endocrine disease
2. Aphasia or hearing impairment
3. Participants in other clinical trials
4. Patients currently on medication to improve cognitive function

At present, we have not made a decision on whether to share all IPD. This is because we need to consider a range of factors, including ethical principles, legal requirements, privacy protection, and data sharing agreements. We are carefully evaluating these factors and will make a clear decision as soon as possible.