Svetlana Kuznetsova was the defending champion, but was forced to withdraw due to a left abdominal strain.
Irina-Camelia Begu and Monica Niculescu were the defending champions but Niculescu decided not to participate.
Begu teamed up alongside Simona Halep, but they lost in the quarterfinals to Tímea Babos and Mandy Minella.
Garbiñe Muguruza and María Teresa Torró Flor won the title, defeating Babos and Minella in the final 6–3, 7–6(7–5).
Liu Wanting and Sun Shengnan were the defending champions, having won the event in 2012. Liu partnered up with Yang Zhaoxuan, but lost in the quarterfinals; Sun partnered up with Chan Chin-wei, but they lost in the semifinals.
Dominika Cibulková was the defending champion, but lost to Garbiñe Muguruza in the first round.
Serena Williams was the defending champion, but withdrew before her quarterfinal match with a knee injury.
Jarmila Gajdošová and Arina Rodionova were the defending champions, but chose not to participate.
Chuang Chia-jung and Liang Chen were the defending champions, but Chuang chose not to participate. Liang played alongside Wang Yafan, but lost in the quarterfinals to Xu Shilin and You Xiaodi.
Bethanie Mattek-Sands and Lucie Šafářová were the defending champions, but Šafářová withdrew before the tournament due to a bacterial infection. Mattek-Sands played alongside Sabine Lisicki, but lost in the second round to Anastasia and Arina Rodionova.
Bethanie Mattek-Sands and Lucie Šafářová were the defending champions, but lost in the first round to Kiki Bertens and Johanna Larsson.
Samantha Stosur was the defending champion, but withdrew before her quarterfinal match due to a left wrist injury.
Raquel Atawo and Abigail Spears were the defending champions, but chose not to participate this year.
Andrea Hlaváčková and Peng Shuai won the title, defeating Gabriela Dabrowski and Yang Zhaoxuan in the final, 7–5, 3–6, [10–7].
Xu Yifan and Zheng Saisai were the defending champions, but lost in the quarterfinals to Johanna Konta and Maria Sanchez.
Agnieszka Radwańska was the defending champion, but withdrew before her quarterfinal match with a right thigh injury.
Martina Hingis and Sania Mirza were the defending champions, but chose not to participate together. Hingis played alongside Coco Vandeweghe, but lost in the second round to Ashleigh Barty and Casey Dellacqua. Mirza teamed up with Barbora Strýcová, but lost in the third round to Eri Hozumi and Miyu Kato.
Serena and Venus Williams were the defending champions, but did not participate this year due to Serena's pregnancy.
Karolína Plíšková and Barbora Strýcová were the defending champions, but Plíšková chose not to participate this year. Strýcová played alongside Lucie Šafářová, but the team withdrew before their quarterfinal match.
Bethanie Mattek-Sands and Lucie Šafářová were the defending champions, but neither player could participate this year due to injury.
Tímea Babos and Anastasia Pavlyuchenkova were the defending champions, but chose not to participate this year.
Latisha Chan and Martina Hingis were the defending champions, but Hingis retired from professional tennis at the end of 2017. Chan played alongside Bethanie Mattek-Sands, but lost in the first round to Svetlana Kuznetsova and Karolína Plíšková.
Irina-Camelia Begu and Sara Errani were the defending champions, but Errani is serving a doping suspension. Begu played alongside Barbora Krejčíková, but they lost in the quarterfinals to Han Xinyun and Darija Jurak.
