Raiden Hua Film Company was cautious about the film at first, until after seeing Fay Wray, Robert Armstrong and Bruce Cabot's audition and O'Brien's dinosaur model, it gave full recognition. Cooper stopped the shooting of "Creation", and the crew turned to " "King Kong" effect. Cooper asked the British best-selling author Edgar Wallace to take charge of the script and even the novel, hoping to advertise the film as a novel adapted from Edgar Wallace. Wallace began working on the script of the film on New Year's Day in 1932. When the first draft of the script entered the revision stage, Wallace died suddenly on February 2. But Cooper still let Wallace's name appear on the list of screenwriters.
When O'Brien originally created King Kong, he described it as "a half-man and half-animal creature covered with hair and a nightmare face with blue fangs". At the same time, he hopes to resonate with the audience. This King Kong must behave " "More like a human", this move drew firm opposition from Cooper, who firmly believed that King Kong had to be more like a gorilla. On December 22, 1931, the American Museum of Nature exhibited a specimen of a male gorilla. Cooper told O'Brien that this was what they wanted. So after numerous revisions, the final version of King Kong retains the overall appearance of a gorilla, but adds some anthropological structures, such as walking upright
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When looking for a candidate to play the heroine, Cooper hoped to use the blonde beauty to contrast with the black fur of the gorilla. Dorothy Jordan, Jane Harlow, and Ginger Rogers had been candidates one after another, and finally But the elected candidate is Fay Wray, who needs to wear a golden fake to act in the film
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