The study aimed to identify the extent of the impact of commercial advertisements of major companies in Palestine on the editorial policy of Palestinian media. The research is considered a descriptive study that relied on the tool of in-depth interviews and analyzing their content by selecting a sample consisting of five journalists working in the field of economic journalism and three public relations officers in a number of major companies. The study concluded that the extent of the interference of advertising companies in the media outlet depends on the size of the company's advertisements, the type of media outlet and its editorial policy. The larger the size of the advertisements, especially from major companies, the greater the interference. The study showed that the extent of the interference of private sector advertising companies in the media outlet is either by passing the press releases issued by them within the editorial space in the form of media material and not advertising, or in the form of preventing the media outlet from addressing issues that affect its interests even if they are important to the public.