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We developed a new, sensitive evaluation method for upper extremity dexterity in patients with hemiparesis after stroke. This evaluation method consists of three types of test the Finger Individual Movement Test, Hand Pronation and Supination Test, and Finger Tapping Test. In each test, the number of movements that can be performed during a 10-s period is measured. Data obtained by these 10-s tests were compared with those obtained by the Nine-Hole Peg Test (NHPT), and the usefulness of this new method was evaluated. In patients with hemiparesis after stroke, three types of 10-s test and NHPT were performed for the upper extremities on both the affected and unaffected sides. Simple correlation analysis and multiple regression analysis of data obtained by the three types of test and NHPT were performed using the affectedunaffected ratios. Twenty patients participated (54–85 years; 0.23–43.83 months after stroke) with mild upper extremity hemiparesis. Significant correlations exist between Finger Individual Movement Test and NHPT data (r−0.584, P0.0068) and between Hand Pronation and Supination Test and NHPT data (r−0.707, P0.0005). The multiple regression analysis model using the three types of 10-s test as explanatory variables was significant (P0.0025) and explained 52.4 of the NHPT results. A significant association was observed between NHPT and the 10-s tests. The 10-s tests require no special examination instruments and can be readily performed in a short period. This evaluation method consisting of the 10-s tests can be a new clinical parameter of dexterity in patients with hemiparesis after stroke.