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Purpose: In this study, 10 weeks of lower extremity exercise was conducted in rural elderly people, and the effect of exercise between the smart home training group (experimental group) and the group-exercise group (control group) was compared to analyze the effect on muscle strength and depression. Elderly women aged 60 years or older who visited the J clinic located in G-gun, Chungcheong buk-do were included in this study. Methods: The study involved a group-exercise group comprising 10 individuals who exercised once a week at the clinic, and a smart home training group comprising 10 individuals who installed the app and performed smart home training at home. At the initiation of the smart home training group, the participants were provided instruction on the correct exercise posture and guidance on how to use the app. Four exercises were selected, including sitting, knee extension, walking in place, mini squats, and sideways walking. The participants were taught the correct technique, their movements were assessed, and the training proceeded. Before and after the program, 2-m step test, short physical performance battery, strength measurement, Beck Anxiety Inventory, and Beck Depression Inventory tests were conducted. Results: First, the short physical performance battery test showed that balance was significantly higher in the experimental group than in the control group (P<.029). Second, knee extension strength significantly increased in the experimental group compared with that in the control group (P<.001). Third, the results of the 2-m step test showed no significant differences between the experimental and control groups. Fourth, in anxiety and depression tests, there were no significant differences between the experimental and control groups. Conclusion: The results of this study suggest that smart home training can improve the strength of the lower limbs in elderly people in rural areas. In addition, considering the significant increase in balance and strength of knee extension, smart home training exercises can be seen as an effective intervention method for preventing falls in the elderly.