ObjectiveTo improve activities of daily living (referring to Barthel Index) in the older inpatients.MethodsIn January 2016, a quality control circle (QCC) was established. According to 10 steps in activity of QCC, we figured out the causes of low Barthel Index score in older inpatients by using Plato method and Fishbone Diagram which were common methods of QCC. In addition, we designed and implemented a rectification program to improve Barthel Index score.ResultsAfter intervention of QCC, the average Barthel Index score of the older inpatients increased from 72.40±6.42 to 89.30±5.87 with a statistical difference (P<0.01); the satisfaction percent of hospitalized patients increased from 94.5% to 98.7% with a statistical difference (P<0.01). The percentage of registered nurses whose theoretical test score were over 90 increased from 57% to 88% (P<0.01) and the satisfaction percent of nurses increased from 90.5% to 95.6% (P<0.01). Moreover, the member’s ability of learning, discovery, analysis and problem solving, communication, application of QCC skills were improved.ConclusionThe application of QCC activities will increase older inpatients’ Barthel Index score, improve the satisfaction of patients and nursing staff, and enhance the members’ ability of solving problems by using QCC skills.