Objective To investigate the changes of cognitive function in patients with mild cognitive impairment after aerobic exercise combined and computer cognitive training. Methods Four hundred and twenty patients were divided into two groups by random digits table method. The control group(200 cases) received general health education and rehabilitation training. The intervention group(220 cases) received aerobic exercise combined and computer cognitive training. The patients were assessed with Montreal Cognitive Assessment (MoCA) to evaluate their cognition before training, as well as after training. Results After intervention, the scores of the MoCA total score, naming, attention, language, memory, and orientation in the intervention group were 24.12 ± 2.18, 2.77 ± 0.42, 5.05 ± 0.88, 2.75 ± 0.56, 3.18 ± 0.91, 4.68 ± 0.87, the control group were 21.13 ± 2.13, 2.45 ± 0.56, 4.71 ± 1.10, 2.35 ± 0.69, 2.43 ± 0.81, 4.48 ± 0.96. There were statistically significant differences between the two groups (t=-11.278~-0.543, P 0.05). Conclusions The application of aerobic exercise combined and computer cognitive training could improve the cognitive function. Key words: Mild cognitive impairment; Aerobic exercise; Cognitive function; Computerized cognitive training