The invention discloses a style information processing method and device. The method comprises the steps that an abstract syntax tree of codes of a React Native page is obtained, and the abstract syntax tree at least comprises first style information of a plurality of view nodes in the React Native page; obtaining first style information of a view node in the abstract syntax tree; second style information supported by the applet page is obtained according to the first style information, the format of the first style information is different from that of the second style information, and the content of the first style information is the same as that of the second style information; and setting second style information in the abstract syntax tree. Through the method and the device, the application is simple, according to the method and the device, the style of the page displayed by the React Native page in the applet can be the same as that of the React Native page; the situation that the style displayed in the applet is different from the style of the React Native page is avoided, and then the phenomena of incomplete data display, disordered display and the like of the page can be avoided, so that the user experience can be prevented from being reduced.