The investigators will collect 165 acute stroke patients who suffer from stroke within one month and have potential of rehabilitation. The participants will be divided into mild, moderate and severe groups according to Modified Rankin Scale (MRS). The patients are admitted for 6 weeks or extend to 12 weeks if necessary after evaluation. Comprehensive rehabilitation programs including Physical Therapy (PT), Occupational Therapy (OT) or Speech Therapy (ST) will be done for two hour each every day and 5 days per week for 6-12 weeks. Initial assessment will be done within 3 days and the following assessment will be done 6 weeks or 12 weeks after rehabilitation intervention by physician and well-trained therapists. We collect basic data including sex, age, etiology of stroke, affected side, premorbid functional condition, onset time, initial function on admission, Brunnstrom stage, Charlson Comorbidity Scoring and intensity of rehabilitation. Functional assessment including: Modified Rankin Scale (MRS); Barthel Index; swallowing and feeding function, Mini Nutrition Assessment; Euro QoL-5D; Lawton-Brody IADL Scale; Berg Balance Scale (BBS); Gait speed; 6 minutes walking test; Revised Nottingham sensory assessment(RNSA); Mini-mental state examination (MMSE); Motor Activity Log(MAL); Canadian Occupational Performance Measurement(COPM); aphasia evaluation. Data analysis will be done by two-way ANOVA, paired t test, regression and multiple variant analysis.