Footage from social media shows the moment glass doors outside a shopping centre in Nanning, southern China, shattered as fans waited to see actor Zhang Linghe on Sunday.
The 28-year-old, who stars in Chinese historial drama Pursuit of Jade, was due to appear at a Molsion eyewear event.
Other videos from social media show packed crowds gathered around balconies within the mall. Organisers later cancelled the in-person event and moved it online.
In a statement on Sunday night, Linghe's studio said: "The brand event originally scheduled for today has been temporarily rescheduled, and we sincerely apologize for any inconvenience caused.
"Everyone's safety is always our top priority."
It added that the actor and his studio would reimburse travel and accommodation costs for fans who travelled from afar to attend the event.
Molsion said medical check-ups had been arranged for fans who "sustained minor injuries", it added it would upgrade safety measures to ensure "smooth and safe" future events.