In 2016, Ermolova started the season winning team gold 2016 Moscow Junior Grand Prix, she qualified to 3 apparatus finals: winning gold in hoop and silver in rope, clubs. She then won the all-around gold at Happy Caravan Junior World Cup in Tashkent. She then won the Russian Junior National Championships ahead of Polina Shmatko. Ermolova won Team gold at the Sofia Junior World Cup, she qualified and won gold in rope and clubs final. Ermolova was selected to compete at the 2016 European Junior Championships where Russia won Team gold (together with Polina Shmatko and Maria Sergeeva), Ermolova qualified for the rope finals winning the gold medal.