On June 1, 2016, Disney scheduled the film to be released in North America on December 25, 2018, and announced the male and female leading roles
; October 20, the film announced Colin Firth starring
; December 23, announced the old Disney actors Dick Van Dijk returns to star
.
On March 4, 2017, Disney released for the first time the role modeling stills of the magical nanny Mary Poppins played by the heroine Emily Blunt
; on March 7, Disney released the stills of the lantern lighter role played by the hero Lin-Manuel Miranda.
In March 2018, the pilot trailer was released
; on July 11, Disney announced that it would upload the film to December 19, 2018
; on November 16, the film released a trailer and a set of character posters, Emily Blunt in the poster Five people, Lin-Manuel Miranda, Meryl Streep, Colin Firth, and Julie Waters appeared in the film
; on November 29, the film premiered in Los Angeles
; on December 12, The film had its UK premiere at the Royal Albert Hall in London
.
On January 17, 2019, the Chinese character trailer was released
.
