Purpose: This research study aims to evaluate the effectiveness of a psychoeducation group, which is founded on an Eastern approach to health care, in improving the quality of life of Chinese people with mild cognitive impairment (PwMCI). Method: In a randomized controlled trial (RCT), 40 Chinese PwMCI were randomly assigned to either a 10-session psychoeducation group or the control group. Results: A paired sample t test indicated that the treatment group (n = 18) showed significant improvement in their World Health Organization Quality of Life Measure (WHOQOL) score, while the control group (n = 22) did not. Moreover, an independent t test showed that the treatment group was more effective than the control group to improve their WHOQOL score. A reduction in the depressive symptoms was related to the improvement in WHOQOL score. Conclusions: This RCT provides evidence to support the feasibility and effectiveness of psychoeducation groups for improving the overall quality of life of PwMCI.