She started her modelling career after signing a contract with IMG models in 2010. Ju debuted in New York for A/W 2011, walking for DKNY and 3.1 Phillip Lim. She appeared on the catwalk for Prada, Hermès and Louis Vuitton the same season in Paris and Milan. Ju did an editorial shoot for Chinese Vogue in April 2011 with Terry Gates and has since worked with photographers such as Annie Leibovitz, Alas & Piggott, Juergen Teller, Tim Walker and Inez & Vinoodh. Ju appeared in advertising campaigns for Dior, Marc Jacobs and Kenzo and for Spring/Summer 2012. She was shot by Nick Knight in a campaign for Lane Crawford for A/W 2012.