Yeo won the all-around at the South Korean National Championships in addition to winning vault and floor. She also won the silver medal on uneven bars. Then, she made her senior international debut at the Guimaraes Challenge Cup and won the gold medal on vault. She was then selected to competed at the 2018 Asian Games alongside Ham Mi-ju, Kim Ju-ry, Lee Eun-ju, and Yun Na-rae. The team finished in fourth place. Individually, Yeo won the gold medal on vault, and she placed ninth in the all-around, eighth on beam, and seventh on floor. She then competed at the World Championships where she placed fifth on vault. Her final meet of the season was the Voronin Cup where she won vault gold, all-around silver, and floor exercise bronze, and she placed eighth on bars and beam.