Hypothesis: This study investigated the hypothesis that subacute and chronic stroke patients who received a combination of yoga and traditional physiotherapy were getting more improvement in standing balance than traditional physiotherapy. And we also hypothesis yoga can improve post-stroke depression symtom.

Inclusion Criteria:

1. The time of stroke onset is more than 91 days.
2. Able to stand for more than 1 minutes.
3. Between the ages of 30 and 80.

Exclusion Criteria:

1. Now receive others palliative therapy.
2. Significant psychotic disease.
3. Obvious language disorder.
4. Medical contraindication(clincans evaluate cannot included).