Shanghai Disney Resort will open in the spring of next year.
Disney's Chief Executive Robert Iger says major construction work will be completed by the end of this year.
The park was initially scheduled to open later this year, but a decision to invest a further 800 million US dollars on additional attractions forced Disney to reschedule the park's opening.
The extra spending has increased the park size.
Disney says it hopes the extra investment will attract 30 percent more visitors than originally forecast.
Shanghai Disney Resort is a joint venture between the state-owned Shanghai Shendi Group which holds 57 percent of the project, and Disney, with 43 percent.
It will be the first Disneyland on the Chinese mainland and the sixth around the world.
It will feature two hotels, a theater, and a large retail, dining, and entertainment complex.
