The mixed doubles tournament of the 2018 Badminton Asia Junior Championships was held from July 18 to 22. The defending champion of the last edition were Rehan Naufal Kusharjanto and Siti Fadia Silva Ramadhanti from Indonesia. Kusharjanto / Ramadhanti of Indonesia and Guo Xinwa / Liu Xuanxuan of China are the top 2 seeded this year.