The Russian woman set a world record, receiving 85.04 points from the judges for her performance.
The second was Japanese Rika Kihira with a score of 79.89 points. Closed the top three Karen Chen from the United States (67.21 points).
The 2018 Olympic champion Alina Zagitova broke the cascade and took fourth place (66.84 points). Another representative of Russia, Sofia Samodurova, became the seventh (63.85 points).
Earlier, Mishina and Gallyamov took third place in the short program at the Japanese Grand Prix.