In 2014, she won the all-around silver at the 2014 Moscow Grand Prix behind Yulia Bravikova. She competed in the World Cup series in Lisbon winning gold in team, bronze in ribbon, in Pesaro winning Team gold for Russia and gold in event finals for hoop. At the 2014 Minsk World Cup she won gold in Team, hoop and ribbon. She won the all-around silver medal at the 2014 Russian Junior Championships. At the 2014 European Junior Championships, Polyakova together with teammates (Irina Annenkova, Yulia Bravikova and Olesya Petrova) won Russia the Team gold. She competed in 2 apparatus, hoop and ribbon but did not qualify to the event finals with Bravikova and Annenkova placing ahead of her in qualifications for the finals in the 1 gymnast per country junior rule. She competed at the 2014 Junior World Cup in Sofia where she won the all-around silver behind Irina Annenkova. Following the leg injury of Yulia Bravikova, both Polyakova and Annenkova flew to Nanjing, there Annenkova was selected by Irina Viner as the final representative of Russia at the 2014 Youth Olympic Games in Nanjing, China. On October 17–19, Polyakova traveled in Tokyo for the 2014 Aeon Cup, representing team Gazprom (together with senior teammates Margarita Mamun and Yana Kudryavtseva) won the team gold. She won the All-around junior title ahead of Belarus' Mariya Trubach.